I can give you any dimensions you may need for your project as I have had a 37 Buick Special with a later 263 straight 8 and also several AD's with 216/235's. The Buick has a 350 Turbo trans behind the straight 8 and a 2.73 rear. This is better gearing than the guys with the T5's have and it's such a torque monster I may go to a 2.41 or even a 2.29 rear. I made a HEI distributor for it by turning a Pontiac V8 HEI to the Buick distributor case dimensions and using the Chevy dist shaft that's cut to length and Buick size tang milled on the end to drive the oil pump. Also have complete templates for a/c mounting (hey, it's in Texas)and a PCV set up that works well. Took it on a small trip a couple years ago; Dallas to Florida to Hershey to Minnesota to Yellowstone to San Franscisco to Bonneville and back to Dallas and not so much as a flat tire. Made a cruise control using the factory throttle and a solenoid that pulled it off when the brake was touched and even though it gained speed downhill and lost speed uphill it was a real leg and knee saver on the long flat stretches. I think you can still buy every part that was ever made for the straight eight engine.
