Memory is telling me it was 5/16" but you really need to check me on that. Some stuff was metric with the T5. Personally I'd have a machinist cut the hole for you. It needs to be done right the first time and it isn't all that easy to do with just a drill press.


~ Jon
1952 1/2 ton with 1959 235 | T5 with 3.07 rear end