Just upgraded the motors to the full 540 size can and got it all wired up.  Don't think I have a thread about this, so here it is. Currently using 2x 3s lipos on the rear and 1x 2s lipo on the front, not got a suitable 3rd battery yet so mixing it up a bit.  In this next video, it was running 2s all round and the finned 3300kv motors and had already driven all the way to the park pulling my boy most of the way. My 8 year old had a go as well..