First of all, welcome aboard! Glad to have you. I'll be the first to say that the OHC is as unique an engine as you'll find. I would prefer that you find another car for your project, but that's just me ... most people do opt to swap in a V-8 for the OHC, which is pretty sad considering how rare the OHC is. If only it was rare AND desirable!
There are ways of waking that little six up and really opening some eyes, but it takes quite a bit of effort and money. And - unfortunately - only a few people in the country can do it.
To swap the V-8, you'll have to make some changes to the suspension and wiring and install new frame mounts. A new radiator as well. The rest is obvious.
