will disc brakes from a 76 monte fit my 67 ss

I believe that's a tall spindle swap.

Not really a 100% way to answer it.

OEM Bolt on,....yeah it will work, sorta. You may need offset upper a-arm shafts (mounted backward), you will need 76 Monte lower ball joints turned down to fit the stock lower control arm.

You can go Custom tubular upper arms for $500, which will elimintae the geometry problems.

Longer outer tie-rods, the longer rubber disc lines from the Monte, master & booster, combination valve, and maybe a adjustable prop valve from Summit/Jegs.

Do a tall spindle disc swap search for more info.
:cool:
DG