98 camaro donor, what wiring to get

[Dustint]

I’ve got a 98 camaro z28 Ls1 with 4L60e that I’ll be swapping into a 48 Chevy pickup on an s10 frame.
I have the engine pulled along with the engine harness and brake/gas pedal assembly.
My main question about the wiring is, what in cab wiring is necessary if any from the camaro. Or is it easier to buy aftermarket for the in cab wiring needs.
Also any recommendations on someone to send my harness to, to convert it to stand alone?