Has anybody run a 4v carb on an c or f code engine without changing anything internally? My 66 has a 68 302 2v and I recently aquired a 68 4v intake and Holley 600. I also have a 4100 but it needs a total rebuild so the Holley will have to do for now. I am just wondering if the driveabilty will suffer without making the additional chages that the 4v motors received. In addition to the motor listed above I have a 3-spd manual, dual exhaust and 3.25 gears. Any input will be appreciated.