oh and bill you dont want an 18rg... you'll end up dissapointed. i'd either biuld and boost the 22r (if yours has a 20r it can be bored to a 2.4... the 22r and a 20r bored that far will have the same wall thickness) seeing as its probly the cheapest motor in the world to build. or swap a 7m or jz motor in. i see youve joined up on calssic-celica... thats a great start