I literally raped the '99 Silverado 2500 for everything I needed for the swap. Engine, PCM, harness, coolant bottle, etc. Right down to the exhaust system and cruise control. Vortec and TBI injected traditional small blocks have shorter cables due to the cable running to the center of the engine, not to the front like the LS Vortec engines.
'93 Chevy 1500 4X4 ECLB with a '99 Silverado LQ4 6.0 and '99 Escalade 4L60E. SOLD IT!!
New toy: 2001 2500 HD 4X4 Extended Cab Long Bed
John