Les,
If I remember correctly the PS adjustment bracket also incorporates a mount for the AC compressor on some models. I think I would attempt to fabricate a bracket before I paid $70 for one though.
Fred


1956 3100 Pickup/Red/350/3sp OD/PS/Disc Brakes
1957 Bel Air Sport Coupe/Red/355/TH350/PS/Disc Brakes
2017 Silverado LT Single Cab SB/Black/5.3/6 Speed Trans
1947 Willys CJ2A w/F-Head engine