Hey, I just found the chart that you might be using to make this calculation. http://www.wallaceracing.com/gear-speed.php Cool. It confirms for me that I most likely have 2.78 gears in the rear end based on the engine rpm I saw this morning.
I'll have to think about this a bit. Thanks again.
Let us know what you decide Turk and why. I'm going through the same internal debate.