2.2 to 5.3 swap Question

Quick question on the 5.3 wiring harness -

I've got a 97 S10 2wd that I pulled the 2.2 out and just purchased an '02 5.3 pullout with tranny, wiring harness, computer....the whole works.

My question is do they have a wiring kit for the main harness that comes out from underneath the plastic plenum cover and goes to the relay box on the drivers side fender. I have that same style box in the s10 but do they make a conversion harness?

contact Nelson Performance, they'll set ya up with a harness