i'm still skeptical about the skunk2 IM for h22a, as so many have had bad results in the US. i think its a matter of having the right supporting mods, and a good tune tho i guess.
mate, if you want to be pumping 150 atw, i suggest you do get the SMSP header, which is DAim expensive, but is pretty much the best header in the world for the h22a.
the more work to the engine, the greater the gains over any other aftermarket header.
150atw = intake, 2.5 exhaust, smsp header, IM/tb, something like a stage 2 cam head set up, and hondata tune.

