B body 8 3/4 in early A w/ PICS

...Early B body years that will work = ? and thank you.

Mike,

The narrowest of the B-body rears were the 1965-67 and make the best swap into an A-body. See flange to flange dimension below.

B BODY
'64 = 55 5/8" (Exc. Max Wedge)
'65-'67= 54 1/4"
'68-'70= 54 15/16"
'71-'74= 57 7/8"
'71-'73 wagon= 59 7/16"