Canada
Jim Auto Parts - parts and accessories for all models of Chrysler, Dodge, and Plymouth cars from 1962 to 1982
Cross Canada - Aftermarket distributor (on-line catalogue)
Gasoline Alley - New and reproduction parts
AutoPartsWay.ca - A few new replacement parts.

Daves Mopar - Electronic parts.

USA
Jim Auto Parts - good place for emblems
RockAuto - Exclusive Parts Catalog
R/M Restoration Parts- Chrysler, Dodge, Plymouth or Desoto parts - 40's through 80's.
Tonys Parts- new old stock (N.O.S.) and used parts.
GTO Alley
- Pontiac GTO dataplates, VIN numbers and Engine Codes
Jacks Auto Parts- On-line Mopar Catalog (great for sheet metal)
Auto Body Specialties Inc.
Internet Resource

OldRide.com
- Classic Automotive Source