Sure Grip Questions

If I understand the question. You have what I call a hybrid 7 1/4” with BBP and C clip axle? If so, no it won’t work as the axles are held in bolts on the standard 7 1/4. And the later model hybrid rear has C clips holding axles in. If we are talking about the same thing.
She's was a 73 318 auto now a 340. Couldn't confirm anything about the axle, never been apart since new.