[Cobra 29]

I have a 351W FMS crate engine with a Weiland Stealth maniford, presently I am running an older Holley DP 650 (4777). The set-up runs pretty good. Low end response is very good. I need to remove the choke horn for more top high air. I would also like to have more tuning options; like 4 corner idle and removable air bleeds.

What is the difference between the Holley 650 DP Street HP (82651) and the Holley 650 DP Pro Series 4150 HP (80541-1)? The Street HP sells for about $500 but the Pro Series is about $675.

What is the difference? I run my Cobra on the street primarily. I have TKO600 (.82 5th) and a 3:31 Jag rear end.

Thanks in advance