Transmission mount issue

[TheBabyDerp]

1979 Mustang. Has a 351 with a T5

The part of the mount that is riveted to the frame has come off. Does anyone know where I can buy replacements?
Or do they make an alternative that bolts to the frame instead of rivet?

I am new to Foxbody's and have only had this one a week.

 

[347HO]

I can't recall any "riveted" parts on the crossover mount assembly.
Everything should be spot welded.

Post a picture.

Are these the thingos?

 

[TheBabyDerp]

I believe that is them. I have come to the conclusion that someone did a very shitty job on this car. Aluminum rivets. I got a temporary solution rigged up. Best route seems to be to just weld them on.