hey, the best thing to do if ur thinking of increasing power is to forget about an rb30. the main thing u want is the block from a VL. then u either want an rb25 head or rb26 head. this is because they are both double overhead cams, where the rb30 is single. if u place either the rb25 or rb26 head on the rb30 block u get a 40% power increase and if u have a decent exhaust and air intake its a bit more. i dnt know how much is ivolved for the rb26 head because it expensive. but the conversion to an rb25 head is very simple. its an amount of tapping it very carefully into place. and that 40% increase applies to N/A cars. so imagine the power if it was turbo.