You probably need to explain how much horsepower you are shooting for. If you are using a stock 4v block, they you aren't going much above 450rwhp anyway. The 2v can hit that without forged internals. Neither the 2 or 4v are going much above that safely without forged internals. Although the conversion isn't impossible, it's expensive and labor intensive with lots of little parts, computer, wiring harnesses, etc... Keep in mind that if you start going above the 400+ range, you need to start looking at tranny, fuel delivery, and
suspension issues that may occur with the extra horsepower. So, in summary, you can get to 400-450rwhp with a simple s/c and fuel system upgrade and that is a few hours versus days of work at minimum.