Hey man, welcome to AF, not that I've been here all that long! Here is my advice and 2 cents: there is a website for people like us that want to modify our cars, and it is really awesome. It is
www.hybrid.honda-perf.org. They have a section right on the front page that says 3G tech. They have all sorts of links and stuff. I just checked, and they say that the only bolt in is the DOHC 1.6 from the 1G Integra. They have some other stuff too, I didn't look too closely, but I am sure that they have some stuff for ya. Have fun modding!