I've had good luck with local upholstery shop making similar interior panels for doors trunks etc. May be the only option. Most board headliners are nothing more than flat sheet matterial that must be form fitted and don't always do the job.
Good luck


It's easier to get forgiveness than permission!
1946 1/2-Ton Chevy
1953 Chevy 3/4-ton Factory Stakebed