I know when I got the Pk Ave at around 78k, did compression test & I installed a new Carter waterpump, regardless of it needing it or not. I think I called that "summer peace of mind" replacement.
He should know how to check the pump flow, through the top rad hose though.
Knowing the psi reading on each cylinder is valuable information about engine condition.
The bonus is new spark plugs go in at the same time.