C10 driprail seamseal and paint help needed!

[oleguy]

I am prepairing to paint my entire C10. I have scraped and wire brushed the driprail down to bare metal. My question is concerning the driprail. Do I prime the entire cab, then seamseal the driprail, then reprime the seamsealed aere? Or do I base coat, and clear coat the entire cab, and scuff the clear coat then seamseal and rebase coat and clear coat, to get paint under the seamsealer to protect it from rust? Am I going at it completely wrong? Any good advise will much appriciated.THANKS in advance