* Engine Mounts: The engine mounts are completely different. You'll need custom engine mounts fabricated or find aftermarket solutions if they exist, which is unlikely for this specific swap.
* Transmission: The GTP likely has a different automatic transmission (likely a 4T65-E) than your Cheyenne's 4L60-E (or possibly a different transmission entirely depending on your Cheyenne's options). This means you'll need to adapt the transmission, which involves potentially swapping the transmission, driveshaft, and possibly the rear differential (depending on gear ratios).
* Wiring Harness: The wiring harnesses are completely incompatible. You'll need to either extensively modify the existing harness, or fabricate a custom harness, which requires significant electrical knowledge. This is one of the most challenging aspects of the swap.
* Computer/ECM: The engine control module (ECM) from the GTP will not work with the Cheyenne's system. You will need to either find a way to make it work (very difficult) or use a standalone engine management system (expensive and complex).
* Exhaust System: The exhaust system will need to be completely custom-fabricated.
* Cooling System: The cooling system may also require modifications, including hoses, radiator, and possibly even the fan setup.
* Power Steering and A/C: The power steering and air conditioning systems may also require modifications or complete replacement.
* Driveshaft: The length of the driveshaft will almost certainly be wrong and need to be shortened or replaced.
In short: While technically possible, this swap is a major project requiring significant mechanical and electrical expertise, fabrication skills, and a substantial budget. It's far beyond a simple engine swap. You're looking at potentially hundreds of hours of work and a significant financial investment. Unless you have extensive experience with engine swaps and custom fabrication, it's not recommended. Consider the cost and complexity compared to other engine options that might be more readily adaptable.
