If you want to go the N/A route, just build up the D16 (if it's an Si) with used parts that are floating around. Port your own head, and intake manifold. Find a gsr throttle body, get a used header. Etc... And you should have a fun little n/a, cheap set up.

OR.

Do what i did. I had a 88 CRX Si, with 215,000 miles on the stock D16A6. I piece a turbo kit for 700 bucks. Did most of the fabrication myself, and I ran 13.8's on street tires all day long. Needless to say that was fun...