Depends on how much you want to take on, as Spac mentioned, there is quite a bit of fabrication to do for fitting a FWD 5-potter.
If you want something different but easier, the 6-pot B6304 fits well. It packs 200 reliable, under-stressed NA horsepower as a starting point.
In order to make way for 5-potter IIRC, @Ghettobird is selling his complete B6304 conversion for a 240, including mounts, electronics and auto trans, for about $3.5K, and getting engineering approval for the swap shouldn't be any drama. This swap has the advantage of being a tidy and enviable setup without the hassles of sump fabrication, etc, if you don't like welding.