While we have a potential option for you, we only have hitch models that fit the Safari model of 1980 Pontiac Le Mans Wagon. If this is what you have, I confirmed with Curt that the Curt Trailer Hitch Receiver - Class II - 1-1/4" # C12005 fits perfectly. It comes with all hardware required for a drill-free installation that only takes about 50 minutes to install.
If you happen to have the base model 1980 Pontiac Le Mans Wagon, we unfortunately do not have a confirmed fitment for that... view full answer...
We do not have custom base plates for a 1964 Pontiac Le Mans but I may have a solution for you. The first thing you ware going to want to do is consult the Le Mans owner's manual. It might not have a towing section in it but you will wan to check anyway.
For a tow bar I recommend the Curt # C19745. The brackets bolt to the Pontiac's bumper and then the tow bar connects the Le Mans to the motorhome. The motorhome just needs a 2 inch hitch ball. When you disconnect from the motorhome the... view full answer...