just use that e class, first jou d osuspension, then lower stiff, rear chamber at 0. front chamber at full negative and caster at full,
then you take the lsd differential on full lock on both accelrate and brake, then you buy the best clutch, and take it from there, increase Displacepent first. cus torque is more important than hp, frome here you can just do all the other stuff, keep stock motor,