This is a used lower alternator bracket taken off of a 1972 Impala with a 350. I found 2 interchanges and one showed from '69-'86 and the other showed '69-'74 Chevy small blocks. I'm not sure which is right, but I put the one with the lower interchange in the compatibility list. This one is used and does need to be repainted. But, it is a genuine GM part and isn't bent or rusted up. Please contact me if you have any questions and thanks for looking.