Action Plus vs ......... any gains?

318willrun, back in the day I was trying to do something similar with my 4 speed big block 361. I had changed out the Carter AFB and stock intake to a Carter AVS on an aluminum DP4B and ran better times. Before I made anymore changes, my buddies had me use a slick on my 2.74 one legger. I think I dropped .2 of my time which was closer to my mph through the traps.
Try a slick. Quick and easy.

PS. After using the slick I decided to go whole hog and completely rebuilt the engine with performance as the goal (pistons, cam, lifters, windage tray, accel distributor, headers, and performance clutch).