H/D brakes (1.25 rotor)

[jlaird]

I have 73-87 drop spindles for the 1.25 rotors. I just went to purchase rotors and calipers at rockauto.com and none of the descriptions say if they are standard duty or heavy duty. Has anybody purchased from there before and can tell me what to buy? I would prefer to buy from rockauto because it it ALOT cheaper even with shipping, but if anybody knows part numbers for either Autozone, Advance, or NAPA, I would appreciate that too.

Thanks,
josh