Engine overheating off and on. Need to replace thermostat.How do i find it. on 2005 Chrysler 300

Occurs every so often,

Asked by for the 2005 Chrysler 300
It's in the engine block where the bottom radiator hose hooks up.
Now, even seasoned mechanics with the proper tools don't like this job.
If you try it, be careful not to cross thread the housing bolts!!!
Suggest letting the repair shop do this one.