[Doug in Maryland]

I suppose I drive the AA fairly hard. On a club tour last spring, I was averaging between 40 and 45, at least on my speedo, and keeping up with the cars in our group. Having the high speed (5.14 to 1) rear helps. My grandfather who owned the truck before me, apparently really ran them hard - lots of heavy hauling, etc. They were well built when new and when properly restored are amazingly durable - much less fragile that many may think.