I want a different CARB!!!!!!!!!!!!!

This POS Carter AFB I've been trying to use SUCKS!!!! Well, it's part Edelbrocks fault too. This is a little 500cfm carb that I've had sitting around for 25 years or so. I originally bought it for a Chevy 305 way back when. Anyway, I only used it for a few months and switched to a Q-Jet on that motor. It sat unused until a few months ago.

Before I put it on the Dart, I rebuilt it with a Carter zip kit. I bought an Edelbrock 'calibration' kit so I could experiment with different jet/rod combos. The Edelbrock jets are the biggest joke... the threads are deformed from where they cut the screwdriver slot. Out of 5 pairs, only about 4 jets TOTAL are any good. If I tried to put in some of them, it would surely strip the threads in the carb body.

Well, I've tried damn near every combination I can come up with, which isn't many, but I can't get a decent tune. It is way too lean. I've got the biggest jets, and the smallest rods (that don't sound right) but I'm still not getting enough fuel. With the initial timing set at 5°, and NO vacuum advance, it pings at anything over 2/3 throttle.

I'm ready to junk this carb and get something different. I'd like a 650cfm vacuum secondary Holley. Anyone have a good used one they would part with for a reasonable price?