Prepping the Inside of the quarters

[bb go dart]

Hello all. I,m new to posting topics. I was hoping to get some ideas on prepping and sealing the inner quarter panels of a 70 duster that I am painting the trunk on. This is a hard to get to area on many Mopars, and tends to capture debris hold moisture and rust out quarters. Any ideas would be highly appreciated. The quarters are solid and I want to try to keep them that way. Thanks.

[hemi-hampton]

Make sure the drain plugs are not clogged with Debris. These can be found under the car in lower trunk extension. A round plastic plug the size of a golf ball with a funny looking hole in it. These getting clogged can rust out your lower 1/4's quick as water may sit in there, especially if you got a leaking back window. Spraying undercoat down there from inside trunk should help. LEON.