[TchncnDen]

I have a headliner idea that I think might solve two problems in one. Since you have two roofs available you could cut the inner skin on the one being used on the truck to do any rust cleanup and add sound deadener, then cut the inner from the original roof about an inch bigger all the way around and use that as your headliner. It could be attached with sheetmetal screws or captured nuts and some nice "dress up" screws and that would solve your bracing concerns. You could paint it the same color, a contrasting color or upholster and you know it would fit perfect. And the bonus part that is right up my alley is that it wouldn't cost you a dime.