[BudP]

Bert's sells the largest trunk carriers, about an inch wider than the other major suppliers. If you really want to use the trunk you will need to strip it to wood, bring it and the carrier to a cabinet maker, and have him/her cut it to fit. Ideally, the cuts should be made on each end so the center of the trunk and the placement of the hinges are not affected. Consider an inside, false, removable bottom to place over the carriage bolts. If the trunk is genuinely old, it will have no screws, only small nails pounded in an bent into a curve with a hand dolly. In that case you will need to nip the heads and pull from the curved end of the nail closest to the surface: old, dry wood splinters easily so go slow.

Have the cabinet maker cut it 1/2" smaller all the way around to leave room for decorative nail heads.