3 Speed Bolt out Swap for M20

[raycow]

Originally Posted by saskgreen

Is there any numbers on the bell housing that I could look for that would indicate the earlier bell housing?

3815891 should be a good casting number for the small hole, but I believe there are others that will work. Unfortunately, the number will be covered when the transmission is bolted on. Once you get the transmission off, it will be just as easy to measure the hole directly.

Ray