First step, Go get yourself a B18b out of a 94-95 integra along with the trans, axles, mounts, wiring and ecu and map sure you get all sensors. Second step, Spend a weekend doing the swap. If you have never done it, dont let it scare you. Most of it just plugs right up and if you have trouble, google it. I have seen complete swaps anywhere from 500-1000 depending on who you know and what they dont know. Third step, do some reverse doughnuts and try to break it lol. Before blowing money on your d15, just do the sawp or if its out of budget, you can pick up a d16z6 which is a single cam vtec for your car and you can get them very cheap. All you need for that is just the engine and ecu. It will be less trouble just to drop the whole thing down in it rather than trying to frankenstein some shit.