Was thinking the same thing great idea. Was looking at the rubberize sticky tape they have at the rv repair shops. Using it to fill the spots were it’s needed
Printed out the instructions be aware it’s like 130 some pages long, but it takes you step by step. Even goes through putting it back together. It’s time consuming like 7hrs. But overall it’s simple.
Finished the install, sorry for the lack a of pictures. Wanted to finish it Tuesday to go riding yesterday. What a difference it made. Impressive on how warm it keep the cab. Started the day in about 40 degrees and wind about 20-25. After about 20 minutes had to slow it down a bit. The one I might do is take the thermostat out and of the upper hose, and reinstall the factory hose with the tee. Sucks waiting for the rig to hit around 180 for it to start blowing warm air out the vents