focus rs engine, how muc you wanting?

the YB, in my opinion build it standard coml[petely, standard compression etc.

fit a WRC head gasket and standard head bolts (or long stud) but don't fir ARP stud & nut kit.

the engine with a T34.48/55 500 cooler and correct injectors will do 380bhp and be perfect, you could use a T34.63 but 2wd's are better on a 48/55 echaust