B-body front end in a-body

Ok, so, you have spindles from a B-body. It's just a spindle and brake swap, nothing else will actually fit. You don't have a "B-body front end", just spindles. Not really any different than doing a 73+ disk conversion, just earlier spindles.

You still have A-body control arms, strut rods, etc. The only B-body replacement parts you would use are the wheel bearings and brake stuff. Everything else will be A-body. The UCA's are 73+ A-body stuff with large ball joints. You'll want to figure out what year your strut rods are, because 67-72 and 73+ take different bushings.
Okay thank you so much for the reply , it confused me pretty bad when I ordered a-body lower and upper ball joints and they were both way to small lol , thanks for the help guys and is there anyway to tell the difference between 72-73 bushings