Working on a '70 Vista with a 455 & a '71 SX also with a 455. Both have factory AC. Question about the bracket that fits over the pass. side valve cover. What part number is correct for these two years? I have two similar brackets that have different part numbers. One of them is off a '70 98 I believe? The numbers are cast on the top I think.
Thanks.

 

in the 71 assembly manual the a/c bracket over the valve cover is 391366 the front bracket that bolts to the fron of the head is 398682 and it shows a support bracket that bolts to the back of the compressor is 387582. there is all three for u.

 

That's exactly the info. I needed! Thanks so much!