ALL 3800'* came with GM Factory Headers! GM call them manifolds though in their database so to **** up us partsmen & keep us on our toes!
Speaking of how really hard it is to look stuff on the GM Database see if you guys would get this! CAPSULE = Sealed Beam Headlight
Module, Sensor & Switch sometimes interchange
Fuel Pumps are in 2 groups with 2 different P/N'*!
Medium Duty Truck Groups can be different than Light Duty Trucks/Cars!
BTW: GROUPS are the different catagories that parts are grouped in.
Group 00 = Engine, Clutch
01 = Oil, Cooling System, Grill
02 = Chassis Wiring, Lamps
03 = Fuel, Exhaust, Carburation
04 = Trans, Brakes
05 = Brakes, Rear Axle, Propeller Shaft, Wheels
06 = Front Suspension, Steering
07 = Frame, Springs, Shocks, Bumpers
08 = Front End Sheet Metal, Heater
09 = Body Mounting, Air Conditioning, Instrument Cluster
10 = Doors, Regulators, Windshield, Wiper, Washer
11 = Rear Glass, Seat Parts, Adjuster
12 = Body Moldings, Sheet Metal
13 = Body Wiring, Vinyl Top Trim
14 = Interior Trim, Seat Belts
15 = Rear Seat Trim, Carpets, Yardage
16 = Cab And Body Parts
17 = Load Carrier Parts
21 = Accessories (Production & Non Production)