I bought the speedo and the tach with out measuring any thing on a whim. Once I got them home and messed around with a flat dash I had I realized the 5" tach would have not fit and look right on the left of the wheel. If I would have got the 3.5" tach it would have fit but I don't like the look of different size gauges. If I could do it again I would use the smaller speedo and tach and 2-1/6" gauge instead of 2-5/8's it would have cost me less for the tach, oil pressure, fuel level and clock plus it would have cost less to have the dash made since they are angled and needed a different size tubing for them.
88 YJ 35's 8.8 rear, family style roll bar, ax-15 external slave conversion, Custom double D fab dash 4" of lift taurus fan, Head light wiring upgrade, MSD 6al, JB conversions SYE, 258 with RV cam, Long tube headers, Borla exhaust. 1"mm, Auto meter gauges.