68-70 Bellhousing on M Body

[CM360]

Pulling /6 and installing a 360 in a '81 Diplomat. My A body 340 bellhousing a direct bolt in?

 

[Buck Atwater]

When I put the 4 speed in my 80 Mirada I used an early 70's A body bellhousing and everything fit fine. You just need to match the bearing diameter of your gearbox to bellhousing. (4.35" or 5.125") and you'll need to use an LA360 flywheel.