I have a 400 sm blk engine I built up running approx 375 HP. Been looking to upgrade from carb to TBI system. Figured I had a budget of $1500 to do this with. Problem is, Most TBI kits will not handle the CFM I require with this motor. Most places ive talked to have a big block TBI which will go 670CFM. I have a 750 cfm holley now. I did, at one time when the quadrajet died, place a 670 cfm edelbrock on the motor and it really held it back. (no balls) So i picked up a 750 Holley 3310 carb and got back my power. So a 670 cfm TBI system worries me. This guy http://www.customefis.com/ builds a custom 4bbl throttle body and wondered if anybody used him before? His custon unit is shown here - http://www.customefis.com/pod.html He seems to know what he is doing, but Im not sure he has built many of these units and has a good tested history. What do you all think? And do you have any other sources for a TBI kit. Ive tried affordable, Howell... Thanks.