I have a pair of 5x100 to 5x100 wheel adapters. They are just about 1.5 inches wide, I think that's 38MM in metric measurement. Original centerbore was 67.1, but I have hubcentric rings for Fiero at 57.1. Spacers are used, but in good shape and true. I had on rear of mt car until getting new wheels with different offset. $50 including S&H in lower 48 states. Feel free to PM if interested.
[This message has been edited by dominic355 (edited 06-22-2014).]