A component package enabling the transformation of a 1973 to 1987 General Motors two-wheel-drive pickup truck or SUV into a four-wheel-drive vehicle is a collection of parts designed for this specific purpose. This includes items such as a transfer case, front axle assembly, modified driveshafts, suspension components, and associated hardware required for the conversion. An example would be a kit containing a Dana 44 front axle, an NP205 transfer case, and lift springs, along with the necessary brackets and bolts.
The appeal of such a modification lies in the enhanced off-road capability, increased traction in adverse weather conditions, and potential improvement in vehicle resale value. Historically, these conversions were popular due to the relative simplicity of the older vehicle platforms and the desire to add four-wheel drive to vehicles not originally equipped. This modification offered a cost-effective alternative to purchasing a new four-wheel-drive vehicle.