Originally Posted by Rocky
One thing I'd suggest to you before adding headliner is add soundproofing on the roof. I can't do that until temps warm up here, but having one less sound reflecting surface in the truck has to help.
Yes I have the same externally ribbed alpine free roof as you.
You read my mind! I'm partly motivated by wanting the interior to feel a little less agricultural, but mostly I'm just hoping to reduce interior noise. I'm currently researching what type of acoustic measure to put under the headliner. Damping, mass loading, barrier, absorption - there's a lot of theory to sift through.
I didn't mention it but one concern I have is interference between the hatch hinges and the top-rear trim piece. But this would be a bridge to cross when I get there. First I'll need to source the pieces.