What to do under the dash besides this?

I don’t think anyone repops the evaporators. Mine works fine with R134. I have a completely stock ac system. Don’t believe any of the chatter about having to replace parts of the system. I am not saying newer compressors aren’t more efficient, just that it is not necessary to have a good working ac.

I replaced my dash lights with 3 sided led bulbs that look nice. There are also threads about using led strip lights that look really cool, but I didn’t know that when I did mine.

Definitely read a lot of threads about it. I didn’t know enough when I did mine and will need to do it over at some point. Be sure to solder the connector pins to the circuit board and replace the nuts the ground the circuit board. A pencil eraser cleans up copper traces nicely.