Engine choices.

I am thinking about which engine will make Monte roar. Right now it has a pretty anemic 2v 351c. I am thinking a 4v 351c would be cool. I was also thinking about a blow through centrifugal supercharger. It might be expensive and a pain to tune, but would be a blast to drive. I could also do a 390 as I have a line on a free one which would need a reuild, but a solid cam tunnel port 390 would be awesome. Any thoughts?