If I'm not mistaking it should be the same one you used on your 302, Just make sure your using the right one as far as the teeth go, mine is with a c4 with a 164 tooth, and also that the balance wt is right for your app, such as 50oz, 28, or 0 (neutral)
I have a 351 in my car with AOD I just got a flex plate from a 1970 mustang with the 302. Works just fine just as long its from a windsor family motor thats a 28oz it should work.