Idler Arm For 1969 Dodge Dart GTS 440 M-Code

A previous shop tried to replace the loose idler arm with the recommended MOG-K7042, but it wouldn’t fit so they heated/bent a MOG-K7041 to make it fit which failed at 1000 miles. Does anyone know the proper idler arm for this car and where to get it? At this point, I have to assume the k-member mount and center link placement is correct.

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