L31MaxExpress
I'm Awesome
He never responded to my contact through this forum. Reluctanse PM'd me his direct contact info, and using that he responded quickly.
I've been comparing Lextech's data for my '98 7.4L to the LT1Swap data to see if there are differences.
On my 97 Express many of the wires were different colors, however I swapped them from pin to matching pin in the spreadsheet and it ended up not mattering. Even if you find wires that are different colors than the chart shows, if it is in the PCM pin called out, put it in the 0411 PCM location. I have found GM used many different wire colors on their harnesses. This is especially true in the 02 sensor wiring.