You can find a used KB 1.7L for cheap. I sold mine for only $2500, and the kit was complete. On my then stock motor full bolt-on GT, it put down 428rwhp/433rwtq @ 9 PSI.
If you're lucky, you can even land a good deal on someone trying to get rid of their 2.2L for a 2.6H.
Me personally, I...