This is my buddies harness that he was going to run on his built LS3 before going to a Holley HP EFI.
It is brand new and for any 58x crank, front cam sensor, DBW LS engine.
p/n 19258270
http://paceperformance.com/i-6255503...s-sensors.html
$1079 from Pace Performance
Includes DBW pedal, computer, new harness, new fuse block/box, O2 sensors, MAF sensor
$950 shipped to the lower 48 states
Optionally he has a ported new 90mm DBW TB for $300 shipped