yea the rods and pistons. im not sure wich engine will handle boost better but i believe the vtr works better with a turbo with the way it spools up n that. but no matter if you have vts or vtr if u wanna run sill bhp they will both need it done. if you do get it done then instead of runnig 180bhp and worrying is it ok, you can run 300 with a smile on your face ha if u wanna go that far.
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