Recall both my headlights and taillights required a larger closeout panel than the recessed outlines molded into the fender liners. They needed to be larger overall to facilitate install/removal and to get line of sight to the adjustment screws. They also fouled the liner contour so I had to adjust the panels by adding clearance humps.
My entire fiberglass underbody will be painted using U-pol Raptor bedliner spray. It’s basically a DIY rhino liner. I purchased the 4-liter kit, per DCarter this should be enough for this project. I generally don’t like buying tools for a one-time use like the spray gun, but I didn’t want to potentially mess up Bob’s spray gun so I didn’t feel bad about getting the “free” gun and tossing it after completing this project.
Wherever possible, I plan to apply Damplifier to the interior side of the wheel well liners. The exterior surfaces will get a coat of the Raptor bedliner spray.
Speaking of wheel liners –
The next piece of the rear wheel liner puzzle is pretty boring. The factory supplied pieces are pretty beefy and have cutouts (I believe for rear wheel well venting). Unfortunately I didn’t plan very well and my oil cooler and coolant overflow tank interfere with the factory fiberglass pieces. In lieu of the nicely molded liners I went old school with a plain ol’ sheet of aluminum.
A few tabs to lock the liner in place and that’s that. I’m planning to also add sound damper material to the backs of each closeout panel, and to all (accessible) areas of the wheel well liners. Between the damplifier and raptor bedliner this should help keep the pinging noise down from rocks getting thrown up into the wheel wells.