Bought an LT4 for a 77TA. What should all be included?

[Schroeder]

I just purchased an LT4 from a 2019 ZL1 camaro with 14k miles before its life-ending wreck. Everything is included. Radiator, condensor, coolers, all accessories, ECM (I know it will need the additional unlock with HP Tuners), trans, etc. It's a very complete engine.

The seller is parting out the car and seems pretty willing to include anything I need. I requested the gas pedal. What other small things should I request (or buy) from the donor car that will pop later during install when I try starting this thing? These small things add up in cost and require wait time. It'd be nice to get them now with my purchase or for small additional sums as opposed to later at full retail.