I run an Edelbrock Air Gap on my '68 340. It's .060" over, KB 243 hyper pistons, Lunati 60404 cam, duration 276/ 284, Lift .513/ .533. Compression ~9.8:1. Ported 308 heads flowing 264 cfm @ .500", Holley 750 Ultra DP, Doug's headers, and the Air Gap intake. Works pretty well, warm up takes a little longer on cold mornings but if you're in a warm climate it's not really a big deal, set the choke a little longer. I've been very happy with mine. I don't know if it will be a huge improvement over the 8007, depends on how built up your engine is. But it's a better intake if you've got the engine to match it.