stock comp. 318, which purple shaft is best?

Greg made a good point. Thats a lot of work for a high mileage engine. I got my 82 5th Ave to run 14.9 with the stock cam in the 318. I put a Edelbrock LD4B, Holley 600 vacuum, MSD 6A, TA valvebody, 2000 stall, and a 8 3/4 with 3.91 SG. Stock exhaust manifold with 2 1/2" pipes and flowmasters. It surprised the hell out of me when it ran that fast, it was a pretty heavy car. I think the gears are what really helped.