I had that intake on a 470 in my lancer. I also Had a M1 with a dominator. The dom ran a 10;24 REALLY CONSISTANT. The 2X4's ran a best of 10:46 which was perfect for the 10:50 class. I also ran a 1 inch spacer under the carbs to try to get a little bit more plenium, that was with 2 650's I put the 750's on and there was no difference. If you put the intake on you will run out of intake about 6,000 where the dom.was good for 7000. It took about 20 minutes to swap intakes. Hope this helps Bill