Awesome! Thanks again everyone, we're going to balance new vs. replacement for sure, but I want to make sure I know all the facts. So, I'm going to check out the couple of places that were recommended and see how the number fall. I've found the same thing that Canadian Rainbirds mentioned. Short DP's are really hard to find these days, and like what Sundancer268 said, 100K on a diesel/Allison Trans shouldn't be a problem. I'm going to have my local shop go over it bumper to bumper and determine if everything is sound, then probably drive it down to Indiana and get it in for an quote on a reno.
Thanks!
Brian