Hi! your curent rear end as a 1100 series or 1260 series u-joint, you need a conversion u-joint, if you need 1310 to 1260 conversion spicer 2140x should work for you. If you need 1310 to 1100 might be out of luck. You said good buy to that 302, you should let go that 7.25 rear end go before it...