It would be best to see pictures of the area in question. It really helps to eliminate confusion.
Please acknowledge if you can post pictures. There are sites that sell replace edge molding and screw head covers.
There also are a thread or two showing some of these being replaced.
TT:1983 Sunline T-1550
TT:1996 Sunline T-2053
TV:2005 Toyota Tundra Double Cab 2UZ-FE i-Force 4.7 L DOHC (MFI) V8 4WD SR5 Automatic
P3 break control
"I know a lot about nothing and nothing about a lot"