I worked at Goodyear in the 70’s and some rims only used an offset washer on the front while others had inserts that also went in the back of rims. Here is a set of “don’t kill me” Chevy lugs from a set of Ansen Sprint rims. The inserts are about 5/8 thick and push in the rear of rim. The Chevy were in the center and you would need the other insert which would move them in or out.
Threw the Mcguard wheel locks in for nostalgia.

Mike

Wow just realized these lugs are 45 years old and the chrome is perfect!