Is a 91 Nissan pickup interchangeable with 93 pickup?

Not entirely. While many parts are interchangeable between a 1991 and 1993 Nissan pickup (specifically the Hardbody generation), there are some differences. The degree of interchangeability depends on the specific part.

Areas of likely interchangeability: Many mechanical parts like engines, transmissions, differentials, and suspension components are often interchangeable, though you might need to check part numbers to be sure.

Areas of potential incompatibility: Body panels, interior trim, and some electrical components might have subtle differences, leading to fitment issues. Wiring harnesses can also vary slightly.

Recommendation: Always check part numbers and consult a parts catalog (like a Nissan parts fiche or a reputable online retailer) before purchasing replacement parts to ensure compatibility. Using a parts number from your specific truck year and model is the safest bet.