Anybody break a stock block, if so at what hp?

That's a beautiful engine with the STR, and it makes huge power as is.

My first thought is, you're crazy pushing any more power thru a "non" roll bar/caged car that's already capable of going 10's, especially on Drag radial's. Safety first my friend, seriously!

Second, if you really want to push some major juice thru that engine, go with a big single 4bbl intake.....it will be way more controllable imo.