Get a JDM B16A engine or a B18C1. Those are gonna be simple bolt in engines and are really cheap. I would say go with the Jdm B18c1 with an LSD and throw the basic I/H/E with some cam gears and a FPR. You will get some really good hp out of that and be able to be ITR's with that set up. If i remember correctly isnt the 2g integra a cable tranny like the old Civics used to be.?