[vectorit]

I don't have enough back ground on the panel trucks to give a detailed response to your question, though I can say that the channels are not perfect in the Suburban. I have noticed variances in other Suburbans I have looked at, while comparing to my 1968 headliner board channel placement along the ceiling.

I think no matter what, every Suburban or Panel will require some custom fitment of the headliner boards.