Richie I need to redo my one on my 53, but from memory, that sounds like it will work much better than how I did it, mine has stress cracks in it where I bent it in the corners I've heard of people wetting it or steaming it to make it flex. One thing I would recommend before you put it up there, is get some kind of insulation to go above it, this time I'm filling the space above mine with silver bubble wrap looking insulation to cut down on the heat in the summertime and make the cab less pingy when it rains and such, you'll be glad you did, I've been driving mine for the last several months with just he insulation and it makes a world of difference and doesn't show if your doing a restoration.
rwise They changed to the Floating headliner in Mid 49 according to the books but maybe the factory your truck was built at had more in stock that year, who knows. I don't believe it's repopped either but get a hold of Jim Carters I know Steve their used parts guy prob. has got some stuck aside somewhere, if not he might be able to go pull one from the yard for you.
Mine in my 47 was the screw type and looked like this.
[img]
http://www.mongosgarage.com/S47/100_1141s2.jpg[/img]
I would be curious from guys who have done both types, which they prefer? Or thought was easier to do?
MONGO