73 to 74 rear bumper help!!

[74340]

So I have a 74 Challenger with a new rear 73 bumper and 73 big heavy inner bumper enforcement ( because my 74 rear inner bumper support the bolt holes wouldn't line up the the 73 rear bumper. My question is what else do I need to get my rear 73 bumper to fit on my 74? Will the mounting brackets on my 74 bolt up to 73 ( heavy inter rear bumper support ?) If the mounting brackets to the heavy inner support rear bumper are unique to 73 does anyone have 73 mounting brackets? I know the 70 to 72 brackets will not fit which is all I can find from AMD

 

[70chall440]

I "believe" that the 73 and 74 are the same or very similar, you just need to try it out and see.

 

[74340]

Thanks I am really hoping that the rear inner bumper support and bumper are only differences between the 73 and 74