1968 Electra Seal help

I have a 68 Electra coupe that I need to replace all the seals on the car. Any and every seal, from windows, to trunk. Where would be a good place to track down what I need for this car, and or another GM car that some of the seals will interchange with?

Thank you

 

Steele Rubber Company should be a decent start:

http://www.steelerubber.com/

 

Steele R may be the only company that makes all that for this particular car.

 

Thanks a lot guys!