+1 more for epoxy prime then Raptor liner.
Epoxy primer
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Raptor liner. I went with Black but they do have tintable if you want to match body color.
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I went with Lizard Skin Spray on Sound Deadener and Lizard Skin Spray on Thermal barrier inside.
I will add some of the sheet type sound deadener in some areas. May be overkill but I want the car cool and quiet with a solid thud when you close the doors. Thermal liner mostly for the firewall, floor and ceiling but we had enough to get the trunk and inside quarter panels. Got the Lizard Skin full meal deal from Jegs.
Rather than use their rattle can top coat, we sprayed body color paint for topcoat in the trunk.
The trunk will be covered with a custom carpet insert at some point but the paint topcoat was a nice touch until it's carpeted. No lizard skin in the spare tire well itself, just paint. Going to have a skinny spare tire in there... Found a ford spare the correct diameter and skinny enough to lay flat in the spare well...