Ok, just because swapping in a V8 isnt something that you wanted to do doesnt make it a ridiculous idea. In my mind, it makes perfect sense, cost about the same, about the same amount of work, about the same amount of power.

As far as other power adders go, you could try getting the heads and supercharger off of a thunderbird super coupe. They ran pretty well. Unless of course, thats too ridiculous for you too.