Marsy

Can anybody help was looking on e bay and came across a tamiya type r motor! How fast would this make it and would it need different gearing from the one supplied as stock ? Keep on racing!

Come on tamiya club members i am desperate for help! []Am new to nitro and only bought my tgs 3 months ago and have only run about a gallon of fuel but my car is having to have its second flywheel i have been told this goes to protect the engine but what is going wrong please help me as i am seriously concidering selling it and going back to electric power which has never let me down! Keep on racing! Marsy []