What does this do?

[Gruman]

Originally Posted by michael bustamante

Fender thing looks to be aftermarket maybe? I noticed two different kinds of mounting bolts

Lots of things going on with this... The original motor is gone, at one point looked to have an aftermarket A/C installed. (still have the condenser in front of the radiator) Then I think the motor got swapped with an 81 model, aftermarket A/C scrapped and original compressor brackets retained on the 81 motor. (without the compressor)

Also might be why I have an EGR thing on my manifold...