If you live in california this is not an option. But a B20 is almost a simple bolt in and is truly cheap. I got my B20 for only $750. I spent another $200 for a good clutch(got a great deal) and bolted it in. In my case I needed the exhaust manifold from my B18a But I got the right intake on the B20 that fits our cars. Most B20's will need the B18 intake as well. A couple of simple wiring mods and now i'm drivin it around.

Car is much quicker and all the power is down low where it is used in daily driving.