Swapping a A833OD for a A833

Bolt in swap EXCEPT the bellhousing. The OD has a large 5.125" bearing retainer so the bellhousing has to have that same corresponding size center hole. The non OD transmission has a smaller front bearing retainer. It's either 4.35 or 4.8. You need to measure the outside diameter of the front bearing retainer to be sure you get the right bellhousing. The alternative is, you can have an adapter ring made to fill in the gap from the OD center hole to mate with the smaller front bearing retainer. I've never liked that idea, plus a good machine shop will probably charge just as much or more than the correct bellhousing.