Single Plane M1 P4452898

Hey Guys,

Getting ready to modify the car a bit, looking to put the stock intake and carb aside, stock '68-340. The motor is getting torn down and put back together since I have the block out of the car. I found a P4452898 Single Plane Manifold, all bead blasted, like new. I'm thinking the car will only be set up to pull to perhaps low 6's, will this be a good manifold with a Holley 750 cfm and a purple shaft cam setup for the low 6's as well, or should I just get an Air Gap? Thanks, Don
Maybe low 8's with a dual plane and 3500 stall and 4:10 gear