Brad and Bill,
Thanks Men!

I wasn't sure if there was a reference manual for these truck like the muscle car world has, so apparently there's not much info to be gained. Gotcha. That's why I was asking. I too have found them more grease pencil like, versus this large, what appears to be, etched number. Thanks for fixing my pic link. For future ones I'll take out the extra http!!!

I appreciate the help gents....
Cheers
