If I were calling th e shots, I'd build a 331 stroker with some "good" aftermarket heads. I've been driving a stroked windsor, and I must say that it is everything that I'd expected and then some. Believe me, it's all that it's craked up to be. Although my build probably wouldn't be considered street frinndly by most, I do drive it on the street more that I make it to the track. It is a handfull.
I've invested a lot of time and money in my build. You've got to really identify your goals, and then set out to achieve them. If you want a street car or a race car you are still gonna have to set a budget and set some goals. A clevor would be cool, but you could get the same performance for less cash with the current aftermarket heads.
The bottom line is...........
What do YOU really want?
Sorry if I look like a jackass, I've been drinking.