* Mechanic's experience: A seasoned mechanic will be much faster than someone doing it for the first time.
* Access to tools and equipment: Having the right tools and a lift makes the job considerably quicker.
* Vehicle condition: Rust, seized bolts, or other unforeseen issues can add considerable time.
* Specific model variations: Even within the 1997 Thunderbird range, there might be minor variations affecting access.
While some online guides might suggest a timeframe (and you'll find estimates ranging from 2-5 hours), plan for at least 4-6 hours if you're relatively inexperienced. This allows for troubleshooting any problems that might arise. If you're not comfortable working on cars, it's always best to take it to a qualified mechanic. They'll likely have it done in less time than you would, and you'll have the peace of mind knowing it's done correctly.