Re: 4cyl and 6cyl Bellhousings????
GP'n you are correct.
I have an 85 AMC 150, and the bellhousings has a diifferent bolt pattern than the 258's, not to mention a hydro clutch, a smaller clutch, and a different front shaft for the trans.
It's kind of a shame that AMC made the front parts of the 4's and 6's similar, but by changing the BP on the rear, they discouraged motor swaps.
Jeesh, ya can't even swap trannies.
You can't tell that it's cost effective to make 2 different parts for basically the same application.
Funny thing is, the more I practice, the luckier I get