Please help me identify what I have.

I was never really a Mopar guy until recently when I stumbled on a great deal for a 1971 Dart roller. I fell in love with it but know nothing about it. I figured out I wanted a 360 and a 4speed. I bought what was advertised as an a833 and a body pedals but when I tried to install the pedals I realized they are not correct. Can someone please tell me what I have and how to identify the correct pedals for my application? Pictures below, my stock brake pedal is in a couple of the shots too.

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