273/904 torque converter

Get rid of that 18 spline old stuff and install 27 spline input etc. Then you can run a common converter and just machine down the front snout. Better to start with 999 direct drum for the five plate clutch and wider band..and rob it's lower gearset. There are higher stall converters on ebay for $185 free shipping. I had mine modified locally and it cost me $195. Ha. If you are rebuilding the motor, either machine out the crank hole or get a later 318 crank. Better yet; go 360, Those first gen cudas aren't very hot on the market; I wouldn't worry about hurting the value. 87 cubes.