I have a Holley 390 that I'm about to put on eBay and just saw your post. I ended up going with the 500cfm Edelbrock. This one has maybe 10 hours of driving on it. It has plenty of extras since I always buy a rebuild and heli-coil kit when I buy a new carb. Since it has been sitting I have gone through it and put on fresh gaskets and pre-emptively heli-coiled the float bowl bolt holes that always strip and leak. Comes with Holley box, rebuild kit, heli-coil kit, 1" 4-hole spacer and all packaging. $250.