Hello I am new to here, I've been trying to figure out this setup I got on a 1982 monte carlo currently has 2 brackets there for the compressor but I don't think there correct for what I'm installing. I have a r4 pancake compressor setup kit but I cannot figure out what brackets are supposed to be there or what I need to buy to mount the r4 setup instead of the a6?

 

Those brackets are for an A6 compressor.
This thread may help you…
305 bracket setup