What I have is a 4.25 Eagle crank, 6.35 Scat rods, and 789 KB Forged pistons, 850 Demon, 2 1/8 Super comp headers. This is in a 70 Nova with 4.10 gears, turbo 400, and 3500 stall. I have a set of 781's but don't want to put the cash into them if square ports would be better. The cam i'm looking at is the Comp XS282S or bigger any other suggestions? Eight years ago I ran a 69 Nova 468 with a 294s Magnum cam, 800 Holley, 2in Comp headers, 781's and 2.19 / 1.88 valves and same trans converter package but 4.56 gears. I want more power than the 468! This car will be driven some weekends and to the track maybe 5 times a year. There will be no out of town within 15 miles of driving. I'm Looking for advice on the heads and cam also the buget is tight. I would rather buy new heads rather than spend the same amount on porting the 781's. Any help will be appreciated!