im having a huge brain fart but..

im putting lt's on my ls1. if im deleting/not using the rear o2s, how do i connect the front o2 harness to the lt o2 location? the front o2 harness doesnt reach the lt o2 locations.

do i need extensions?

 

You can buy extensions on e-bay.
Or, you can extend your wiring. What I did when I built my harness it took a harness from an 01 silverado so I could use the wiring from the computer pin forward to make it as long as I needed.

 

If using the fbody harness as a whole, switching the wires at the PCM for front and rear ho2s will do the same thing for free