I bought a used Edelbrock 800 AFB carb and recently went through it thoroughly. It's a very strong performer on a 440 stock engine - seems a bit rich at idle but then all old cars do these days on junk gas. Biggest issue is hooking up a divorced choke if you are a slave to originality. I managed to do so with some bits off an old 340 AVS I had but it's not quite as nice a job as Lewtot184's example - but it functions well. If not a slave to originality just put an electric choke kit on it and wire it to the 12V side of the ballast resistor. You may have to play with the kickdown linkage a bit to get it just right - but that probably applies to Holley or Edelbrock. I have 3 Holleys on other cars and I find pluses and minuses with both. Holleys have more leakage paths due to wet bowl gaskets and bowl screw gaskets. I've found you need to be careful setting the accelerator pump on the Edelbrock so that it properly re-charges between throttle openings. Holleys are nice in that the fuel bowl levels can easily be adjusted and checked. I prime my cars before starting and the Holleys are a bit easier as I use a mustard type bottle to fill the float bowl through the vent. The Edelbrock can be primed through the bowl vent near the primary rods but I usually just dump a little fuel down the primary throats. Both are subject to percolation when hot - if room and insulator gasket helps. I just like a Carter or Edelbrock on my GTX since that's essentially what it started out with. For a car with a heavily modified motor that probably doesn't matter.