temperature

I noticed a couple weeks ago that the risers were pretty hot when running in the driveway for 5minutes. Decided to change the thermostat and impeller. This is a 2019 Marine Power 350 Vortec Chevy on my 1982 Skipjack 20 Open. The thermostat housing is weird on my motor. It had a plastic spacer...

Thought some of you would be into this info as it was a question I had. I keep my fishing tackle in my workshop which can get into the 90's on the summer time hot days. Knowing that i have a couple of long range trips I'm always wanting to have my gear in top shape, otherwise whats the point...