We're running the 454R intake with a 1050 Dom., also we have a very good set of heads (BB 2 Extra, fully ported) on the 468" motor. You don't say what kind of rearend you have, is it a 10 bolt or a 12 bolt, or 9" ford, do you have a spool?, is it a ladder bar car or 4 link? If it's a stock suspesion you can get a taller tire under it which you need. I had a 66 Nova with a sm/blk, 10.5X 28.5 tall MT's it ran a best of 10.31@129,85 with a 406" and would carry the front end 30/40' out/ I was running a turbo 400, with 4.88 gears. It was a ladder bar car.
By the way that Biscyne is now for sale, for $18,000.00, runs 10.40@129 on motor, 9.77@138 on 200 shot. The car weighs 3700lbs, less driver.
Zip.