I have a 292 in a 63. The car is all steel and weighs about 3100lbs. The motor has no nitrous or turbo. It ran 12.6's at close to sea level and cost more than GM crate 383. To me it is a lot more fun than a sbc, but it is not cost effective if you are worried about et vs $$. Building a turbo or nitrous motor would get the power cheaper, but power to power the sbc is cheaper.
Check out inliners.org if you are interested in inlines. The bulletin board has a section for boosted motors.