I've installed a 2001 6.0 to replace my customer's blown up 5.3 in an 07 Avalanche. The donor truck didn't have AFM so the brand new knock sensors and harness are in the valley. The original, (2 wire) sensors are located by the motor mounts. I have no bosses on the 6.0 in which to drill and install the 5.3 knock sensors. I'm sort of stuck. Any help would be appreciated.