ERIC JAPAN ENGINE
3900 N ELSTON AVE, CHICAGO, IL 60618
Phone: (773) 463-8108
Speak to -> John Lin (english isn't the best so be patient)
I know 4-5 people who have bought H22As from them and had no problems. Plus, they even come with a warranty! Tell them Keith from St. Louis referred to and you'll be able to get that pricing. Sorry HMotorsonline.com... but they weren't very helpful when I bought a header from them after they told me there was no problems with it at. I received it with damaged to the downpipe after I specifically asked them if there was damage there.
I ended up using the 5th gen TB and IM... well, my TB is a P + P S2K TB...
But the older 4th gen TBs have the map sensor mounted on the firewall where the 5th gens have it mounted on top of the TB. My 5th IM was port matched to my S2K TB as well so it was a no brainer. I would just use a 5th gen and save yourself the hassle of potential missing vacuum lines.
I had my injectors cleaned and balanced by Cruzin Performance
http://www.cruzinperformance.com/. Rich (the owner) does a great job explaining the process and gives you a ton of details. They also document everything and they MUCH cheaper than RC Engineering. That said, I cleaned up the peak and hold injectors (since it came out of a 94 Prelude) and after getting the before and after statistics, I didn't really need to do it. Oh well... better safe than sorry I suppose.
Keith