What is this?

[dartnlo]

It's been a while since I was under an A-Body and all I have are pictures right now. What is this hump/box? Is it just part of the missing exhaust? This is a 72 Swinger.

Thanks.

 

[gdrill]

If it is bolted on, solid and heavy, i took one off a 74 I parted out. Something to do with anti-vibration?

 

[dartnlo]

If it is bolted on, solid and heavy, i took one off a 74 I parted out. Something to do with anti-vibration?

This is a 1972 Swinger, That would make sense, I guess I'll find out for sure when I get the car!