A computer program to build a virtual bicycle from vintage parts? Would be more interesting to document those that you cannot find specs for.....creating a database on the coat tails of the late Sheldon Brown. Finding 'complete' bikes is all about luck already/finding the correct parts to make it complete is a hobby in itself.
Don't see this working unless it's a local project. Anyway, good luck with that.
PS- would that we could-we all don't ride Paramounts. hehehehe