Aftermarket alternator mounting bracket for 1970 340
I wouldnt blame the brackets you purchased just yet, the onus is on you to know what year of parts you have to start with. I realize its frustrating. Got links/part #'s?
Your w/p is 70 and up. Are your heads oem? Did you order 70+ brackets?
Your idea can certainly be done. I have a mig and the material. It's just the idea of spending the money and getting crap. I'm tired of spending money. I think I can speak for a lot of people. Want what I paid for.