On my last dyno sheet, my car made 330 with the blower, before I sent it for a rebuild to freshen it up. That was a 10#s of boost. Its a small Vortech - entry model.
I have a low mileage stock, original block - not a 306.
I am stock suspension - although I did replace the rear lower control arms with weight jackers - needed to clear my new wheels - 18" AREs.
I have full interior, stereo, etc. Battery is even still up front. My car is not a drag car by any means.
The pressure is all on you.
You have a built motor, in a race car chassis.
I have a stock 90's model car with just a stock V8 and a entry level blower.