since the lower offset is 1 1/4 from the end of the tube ...this will be for:
big block 1966-70 B-body & small block 1970-74 E-body & 1971-74 B-body
The A-body (67-76) has a different offset and is a 7 inch tube for V8 or 8 inches for a slant six . Since the offset is different I would think it would be better to sell this one as the application above and get one made for an A-body. Would save a lot of time because simply shortening the tube will not be the fix because the lower arm on the Z-bar you pictured is completely different than what you need.