Congrats on joining the inline-6 crowd, you definitely got a good deal. I just love my "Big Blue" '01.5 LB QC. When I was up by you guys for the Paulding event I did not have it but I'm sure you would have gotten the diesel bug sooner.
As for forum, try TDR turbodieselregister.com. They also have a quarterly magazine they put out and I would highly suggest it if your are a info nut, I would even call it a magazine as it is the size of a small catalog, usually over 100 pages, and JAMMED with articles and very little advertisements. If interested I could get one to the Bears for them to give to you. Just look them up for info.
Congrats & enjoy!!!