[Camaro_nut2001]

I'm runnin a '72 model 5-lug rearend in my '69 Chevy truck. I need to know what drums will interchange. I need the 5X5 bolt pattern & the correct brake size but a smaller outside of the drum to fit in a 12" wide aluminum wheel. I ground the fins & outside of my truck drum down a little so the wheel would go on but I would rather put another set of drums on, like off an Impala, Caprice etc.... I know if anybody would know it'd be right here. Thank you.