73-80 vs 81-91 body mount differences

[Mr.Chevy4x4]

I did a search and didn't find what I was looking for.

I am just starting my 2wd blazer project. I found a '78 2wd with some rust issues and a 1988 4wd that has a great body. I am going to put the '88 body on the '78 frame.

Can someone tell me specifically what the differences are between the body mounts, and which ones I should use for my project.

Thanks in advance, and I will start a build thread soon.

Mike