1973 wheel lug spacing???

Esay on a 73.
If you have drum brakes, you have 4 inch (small) bolt wheels with 7/16ths studs.
If you have front disc brakes, you have a 4.5 inch bolt pattern with 1/2 inch studs.



If you are still in doubt, see here...

http://rockcrawler-mrt.com/boltpatternref.html