Will it by chance fit, I'm thinking not but thought i'd ask.

LK

NOPE, not even close. I own both.
The rear sway bar for 68-72 A-bodies attaches with bolts that go through the sides of the trailing arms, the 73-77 bars attach from below.
Sorry, I know that is not the answer you were looking for.

i've put them on by boxing the lower control arms with 1/4 steel then drill and tap the holes.

I'll pass, Thanks for the info.

LK