I see plenty of 6.2s and 6.5s. In fact I have one of each. Also three Dodges that aren't worth the work it would take to fix them.
As for ripping it apart, it's ok that you're not familiar with the truck I'm talking about. Most people aren't; nor was I until fairly recently. Now that I do know, I see them everywhere still slugging it out as tow trucks, rollbacks, box trucks, boom trucks and railroad service trucks. They're basically a light-truck cab on a Kodiak/Topkick chassis, except that they also have Kodiak/Topkick doors. They were only made from '92-'02 or something like that. GM continued using the "3500HD" name after they discontinued that truck, but it's not the same. The truck I'm talking about is a 1-1/2 ton medium truck. And it can handle a Cummins way better than my Dodge that came with one.
Here's more info about the real 3500HD:
http://www.3500hd.com/index.php?PHPSESSID=d3a2f1d781aa0e2414748173a8953b0d;wwwRedirect