Ive been researching this alot recently... and im slowly finding some good information... I got advice from a guy in usa, who gave me this advice....
"First, the M06, is not a great platform to use for a RWD drifter, but it's not impossible to mod one. A gyro will DEFINITELY be required, so get a good one. I use HPI's D-Box 2, but a good inexpensive one will work. Your worst parts will be tires. I suggest you locate and purchase as many as you will be able to find. One caveat, though......HPI's T-Drift tires for "M" class are different diameters for inside and outside beads, so the wheels must be a specific type. Outside tire compounds will be tiny, if not non-existent. Indoor tires are all over the place, IF you use Berber carpet, as is specified in the text above. Next, the M06 doesn't really lend itself to weight distribution changes well, so a little creativity will be necessary. You will want a weight distribution of at least 55/45, biased toward the front. My best advice? Get an M05 Ver.II Pro, and do what I did. The new Ver. II Pro is the best version of the M05 Tamiya has put out, so far, and it works well for drift, if you do what I did. The mods are relatively easy, compared to what you'll have to do, with an M06. I have one, myself, and found it wasn't a good candidate for RWD drift, with the supplies I had. I am saving it as a RWD racer, later on..... I am a retired American Army veteran who just received his service dog, and I have no more time for RC. Try contacting the poster who posted above you. I know Mitch, and he can help. if he's still doing his "M" classers."
and recently gave me this advice too...
"If you're invested in the M06, then try using "air" batteries, for airplanes. Those are smaller than regular stick-type batteries, and you can alter weight better with those. They don't last as long as stick batteries, but the mod potential is worth the extra trouble. Stay away from aluminum steering components. You can get steer angle with the stock components, The first thing you'll have to do, is get rid of the bellcranks. Those will NOT work with any system that improves steering deflection. You may have to relocate the steering servo location (putting it up front, where the bumper is, was my last idea - adds weight up front, too). Look at the stock steering parts, and mock them up to one another. You'll see where material needs to be removed, to get more deflection. mostly with the front C-hubs and knuckles.
Look VERY closely at the front steering on the M05. It uses the same parts as the M06 in this area, so much of what you see will transpose to the M06 with a little modding. You might invest in some small aluminum parts, such as standoffs and spacers (TQRC Racing online has several types and brands of those parts that I have used, and they stock all the ones I did use), which will be necessary. Don't worry too much about the power system at this point. The chassis will be taking up the bulk of your time from now. I ran a 5700Kv system in my M06, and it was too powerful. It now has a 4600Kv system in it now, and it works better for power modulation, which is very important to drift. The lower-rated systems all have better modulation than the more powerful systems. Don't get too locked into power, because drift really doesn't require much. The reason you spin out now, is because of:
1) bad weight distribution 2) wrong tires 3) too much power delivery Thee are all issues, but no one is more important than the others. They all contribute, and all are tied to each other, adjustment-wise. The way you see the list, is exactly how you should tackle them. Weight distribution first, then tires, then power system. Do it any other way, and you'll be chasing the other two, repeatedly - not a good idea."
I have recently bought the Eagle Racing kit which give you a carbon lower deck and alloy gearbox housings amoungst a few things... It also allows me to move things around the chassis to get the weight distribution in check, then ill work on modifying the steering to get as much lock as i can....
Hope this may spur some of you guys on to follow in my footsteps.
Thanks for the comments.