need info on 5.7 to 5.3 swap

[new to the ls motors]

just bought a 40,000 mile 5.3 setup with a 5 wire harness.i'm sticking it it a 2000 crew cab.it's the old bodystyle.bolting it in is no problem,but will the accessories work in the truck,will i be able to hook up my cruise,will i be able to use my guages,including speedo?

[LS1GMCTruck]

just bought a 40,000 mile 5.3 setup with a 5 wire harness.i'm sticking it it a 2000 crew cab.it's the old bodystyle.bolting it in is no problem,but will the accessories work in the truck,will i be able to hook up my cruise,will i be able to use my guages,including speedo?

Yes, yes, & yes.

[GasGuzzler]

The accessories are not the same. Different years require different mods to make the gauges and cruise work.