Bench Racer Challenge.

Wow. Thanks for all of the fantastic input! Lots of very good points made.
A couple things that I forgot to mention. The intake manifold and 650 DP it came with don't work together because the carb is a spread bore while the intake is a Weiand 7501 square and also wouldn't support that much power. So... The mention of having forgot the nitrous may be a legit comment! IMHO, I think he kept his converter, trans, intake, NOS, and carb and threw in a bunch of random things to sort of complete the package.
If he stripped out his car, had 4.56 gears, slicks, and the rest of the correct parts on the engine, I would be able to see 10's but 600 HP, is a pipe dream. In its current setup, assuming the carb and intake worked together, I would be happy with a 12.99.