Welcome to the forum. Lots of good info and help...
Nice looking truck. You're lucky to get some of the deep water fording parts like the exhaust. They did take the CDR valve and most likely the container and valve. Just like on my M1123 that I just got a few months back.
I took the liberty to look over the GP sale ad of your truck. You do have a transmission leak, and also what looks to be radiator cooling leak. Get these fixed before you do much other repairs or run the truck for any length.
Also, the DOT date on your tires looks to be around 2008. Just like mine. I drove it for a while, then blew one tire. I replaced all 4 from Feltz tires online. Great replacements, load range E, mounted on 24 bolt rims with runflats, delivered just over $1K. A little sticker shock at the time, but soooo well worth it after the fact.
Get all your fluids replaced. Wait on the transmission and coolant until you have that figured out and fixed.
And, as others will remind you, post plenty of pics and keep asking questions (after you reads the TMs of course...
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