RE: Weatherstripping:
Ferghedabboudit...
No NOS
No Repops
Every yard in the country has been scoured and what few were left in decent condition have been scooped up and hoarded. Any yard that still has any are probably worse than yours.
The usual solution is that Restration Specialties has stocked specifically for us guys a weatherseal (GM, I think) that is close and sells by the foot so you fab your own using the factory mitered corners and the stamped ends.
RE: Whiskers:
Restoration Speciaties also.