I've had them come out with the factory back side weld broke. I can't remember if I redid the factory side but the fillet was tigged. You also need to clearance the carrier sometimes at the bushing because it will interfere with the tigged fillet weld.

Not trying to high jack your post but does any sell or make the wide 2 inch a band

Since we're on this 904 subject, is there some book or article on building this trans for racing? I have tons of info on the 727 but this will be my first 904, race only by the way.

They are available but you usually need to supply a 2" core, they are pretty much dried up.

I got mine from A&A. But as M code stated, I believe I had to send the old one in.

I got 2 from transact a couple yrs ago. No core.