hes always had the same 16v blue top. he just got some guy to make a manifold to he could get the gixxers to work. i think the best way to go would be either the 20v internals, or a setup like eagle/weisco. possibly bore over a bit, fully built red top head, ie hks cams, gears, jun over size valves. if the cams are gonna be real nasty with alot of lift, gotta call in some dual spring valve springs. simply retain the same itb setup, or possibly go for somthing with bigger throttle bodys. 20v steup or somthing. the reason for not having the red top block/internals is the heavyer pistons, sure you get more compression with the ae92 engine, but with heavyer (harder to rev) pistons than the blue top, its hardly noticable. really this is my dream motor if i were to get another 86. 20v black/silver top to me is to pricy and not really effective. those engines are nearly maxed out. think about it, 5 valves in a space around 3" inches in diameter, not much to play with. i like 4 valves, leaves room for more options. anyone ever see a 20v motor put out more than 350hp? its a much more responsive motor in factory form, but with a little work to a 16v hybrid, youll be past the level of the 20v still with space left over for more work.