Upgrade intake manifold?

Ok, so I currently have a dual plane Weiand Action Plus 8007 that was on the car when I purchased it. Took it off to solve a problem with the new distributor not seating correctly, needed to check the cam and oil pump gears.

Now that it's off, and I can probably spring for a new intake if I wanted to, any suggestions on whether it's worth it to spring for an Edelbrock performer air gap? Or another intake you'd suggest?

Details:
340/360 (long story, still researching but believe it's actually a 360, not a 340 like I was told).
Mild cam, not sure which one as it was built when I bought it
Heads unknown as well due to same as above
New 650cfm Holley 4 barrel.