I think it's an M1. I read it can't fit w/ a glass soft top, but a hard top will work.

What exactly doesn't work w/ the glass soft top?

 

The glass wont fit with the harness bar welded in back there.

 

So this is an M1?

 

Yup

 

That is a very weird design. Looks Harddogish but I had a HDM1HCSD and the diagonal does not run off the front leg. It runs from the rear leg to the upper hoop. That looks like it's have issues with passenger seat travel

 

I've never seen a hard dog bar (powder coated) rust like that. Mine's pretty old and only has some slight cracks, and therefore rust, by the welds on the base plates. But that's a 1/4" plate that bends a little and gets banged on by my socket.