which subaru model to buy
 

hi guys

im about to build a rally car im looking for model advise

a few years back i had a 1995 sti 280 bhp redtop model

as i said im about to build a new rally car and am not sure what base model is best

i know the ra is the light weight rally altered model but it has only 240 bhp

the sti redtop has 280

but im not sure about gearboxs in respective models

can anyone tell me if there actually a variation in the wrx ra and the sto engines or is it as simple as an ecu remap

or is the redtop engine totally differant


any advise would be appreciated

thanks