Hmmm, deffo want roller bearing core (dont want lag as my lover Dan as mentioned), but really would be stuck on turbo, i just dont fancy GT series, my theory has always been smallest turbo possible to achieve the power you want.

im not chasing number so 430 in all reality would be cool, but it must be drivable and pin you, like a car to have plenty of torque.

im cllecting parts this year to do it next winter, but want to get it right