Seen a few done. It can cost between 6K -12K depending on if you care if it is done properly. But you'd be better off (in the long run) buying a turbo engine and box.
that is wht i sayin cause my buddybuilt a frankenstein 1.6 vvt with some wiseco pistons the full works and add a turbo to that it run him into almost 40k and still spending cause he running low boost with the original auto trans but it movin check tht cost as opposed to instlling a BPT and modifying tht i think the BP is a better bet or try to get the ultra rare fs-det