I got a NOS Buick HEI Oddfire Distributor. After looking at the distributor cap I understand the spacing. I just got a distributor cap for the Delco distributor that is in the Jeep now. A Napa RR 189 which was specified on the site as being the right cap. The terminals on the Napa cap are evenly spaced out on the cap. The HEI cap have spaces where the 2 cylinders are not used. How does this effect the performance of the engine using the cap where everything is evenly spaced. Was a cap ever made with the right spacing for the Delco Distributor. Need to get the Jeep running and licensed now and will put the HEI in this winter.