* Mechanic's experience: An experienced mechanic will be much faster than someone doing it for the first time.
* Access to tools and equipment: Having the right tools readily available will speed up the process. A lift is much faster than working on the ground.
* Vehicle condition: Rust, seized bolts, or other unforeseen complications can add considerable time.
* Specific year and model: Even within the Z34 generation, there might be slight variations that affect access.
A reasonable estimate for someone reasonably familiar with car repair, with the right tools, and no unusual complications, would be 4-6 hours. However, it could easily take longer, especially for a novice. It's always best to add buffer time to any estimate.
