Glad you got it installed OK. Good job. When you are wiring all various components, I.E. switches, gauge panel, connectors for lights, etc., be sure to provide a "service loop",(extra wire bundle length) so that these items can be brought out from dash or pulled out from body to inspect/repair. At least be able to unplug if they are connectorized. If you have wired before, you know all that. I think it looks nice to dress it with small zip ties (tails cut off) every 2" and leave it that way or put plastic or cloth loom over it, especially under hood.
Bad math on my part. The Nominal Minor of the 3/8 is .314 and the Nominal Major of the 5/16 is .307, a difference of .007 (nominal clearance)....and a possible interference if bolt goes big and threads go small, tolerance wise. Using 18P and class 2....but you did not do it that way so it's moot.
