Hey guys, I plan on replacing the sp 750 Holley on the 426 in my 64 Polara this winter with a dp 800 Holley I have. I've also been considering going to a dual 4 setup. Which do you guys/gals think is better, performance-wise? The dual 4 set will cost a lot more as I already have the 850. Are dual 4's THAT much more trouble to set up and keep adjusted? Do they perform a noticable amount better, or is it mostly for show? The engine has headers, a 513" Lunati Voodoo cam, small amount of head work with smaller valves, and a 4-spd with 3:91 gears. I'm also installing an A833 od. ---- Please address private mail -- mail of interest to only one person -- directly to that person. I.e., send parts/car transactions and negotiations as well as other personal messages only to the intended recipient, not to the Clubhouse public address. This practice will protect your privacy, reduce the total volume of mail and fine tune the content signal to Mopar topic. Thanks! '62 to '65 Mopar Clubhouse Discussion Guidelines: http://www.1962to1965mopar.ornocar.org/mletiq.html.