SB supercharger......

In the end it's all in the tune. You can run 30 PSI on an all forged motor or all cast and if the tune isn't good, things can go bad in a hurry. A built bottom end gives you more resistance to error if your tune has an issue or if you get some bad fuel. Fueling is not a place to skimp. BTW, the latest issue of Mopar Muscle covers supercharging in detail.

Turbo's are pretty sweet, but you'd need to fabricate the hot and cold side plumbing unlike the supercharger kits that pretty much come with everything you need to install. There are a few turbo A bodies running around, I think I saw a setup in the For sale forum.