Fuel pump swap/interchangeable?

My fuel pump is out, and I know because I've already changed the fuel pump relay and fuse. Had the pump tested and it's no good. The pump that is available costs $469.99 (that's a lot of money for me) however, my friend had a 2014 Chevy Camero v6 and she bought a fuel pump, and it turned out to be her relay. Her pump was only $81.00 and I was wondering if they were interchangeable. Murphey's law was written for me so I'm sure it won't work but there are times I get lucky.

Thank you in advance!

A broke single mama that is hoping for a lucky day,

Jerimie