72 long bed floor replacement alternatives

[Robin]

Are there other long bed floors that come close to replacing the floor of a 72 Chevy.
My truck is going to a welder next week for cab floors and supports up front and I need a new floor for the bed also. He said he might be able to figure something out, but before I dump alot of money into his idea, I'd either find a junk yard bed that I could use for him to fabricate or go with a new one at $1000.
Thanks for any info.