We spent many hours and days contemplating how to make the giant 6L80E 6-speed automatic transmission fit under the '66 GTO, but it looks like the surgery required will push this car well beyond its deadline and budget. While it is a cool transmission, the 6L80E is simply enourmous, and in order to make it fit under the car, we'd have to cut the entire floor out and fab a whole new tunnel, raise the enigine, and try to make it clear the hood. We simply don't have the time. So, after a chat with Mark Bowler of Bowler Performance Transmissions, the choice was made to switch to a GM 4L65E, a 4-speed automatic trans that is a much easier fit to the car. But in order to keep the car's original multi-gear theme, Bowler informed us of a new plan utilizing a Gear Vendors overdrive unit, a Bowler controller, and a Twist Machine Shrifter paddle shifter that will allow the driver to manually shift up and down through 8 gears. The detials are to come on this system, but right now we're working on getting the 4L65E into the car and getting the wiring harness to work with the L92 V8's ECM.