my '53 project

[etrone76]

hey everyone, just joined the forum....tons of great info on here and alot of inspiration and ideas for my 1953 Chevy Truck build. I am building it for my mother, she has wanted one for as long as I can remember. I am planning on updating the drivetrain with a Mustang II front end set up and I have a 5.3L LH6 engine/harness/ECU/pedal/4l60e trans from a 2008 GMC Envoy Denali. I am in the process of swapping an LS3 from a 2011 Camaro into my 67 Camaro and I purchased the swap harness for $675. I was wanting to modify the harness myself this time....either the Envoy harness or the 2011 Camaro harness that i still have. Anyone know where i can detailed info on what needs to go and what needs to stay on the harness? Thanks