I picked up a nice used holley 950 cfm 3 barrel carb this week. These were used on some of the hot rod dealer engines like Berger,Motion,Nickey,etc back in the late 60's. I was just curious if anyone has used one and how they like the vacuum secondaries vs. mechanical. I am putting it on a 476 ci chevy(non buick....lol.)and would like to shift it around 7200 rpms. Does the 950 cfm seem to fall into the right size for this application?