I have some monster truck wheels and tyres for my marder, aint used them upto now, ( and i know they look pretty daft on the marder slim line body) anyway , will these hamper the performance of the car as im thinking of changing the gears to get more top speed>(maybe 42/22 from 46/ 18) I know my acceleration with the origonal gears will be slightly slower off the line , so how bad will it be with taller gears? the thing is i should have a bit more torque soon with 29cc from 23cc, will that equal it out,or should i just leave them alone?(big wheels)while im here does anyone know what sort of h p a stock 29cc zen puts out with jetpro 2 and a k and n filter. thanks