1970 Duster

I contacted SCAT Enterprises (PROCAR) and they said to use adapters for the Dart part #'s 81432 divers side and 81433 passenger side they will bolt right up!
I'm attempting to bolt those exact brackets to my 1971 Demon and the brackets do not match at all. Please tell me I'm doing something wrong. I have tried various positions and no way it lines up nor compensates for the uneven bolt pattern.

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