It looks like you found one of the old thick-steel models. Great score and awesome work! Pork butt all the way for your first cook. Don't forget to run it empty at a high temp first to make sure the chemicals are burnt off.
NB El Dorado Offset, Primo Oval Junior, Traeger Model 075 Pellet Pooper, Big Chief, Kingfisher Kooker 14" gas/wood combo, PBC Brethren Edition
Home Brewer, Murderer of Squirrels, Armadillo Inspector
Flaming Pig Head Mod
Black Thermapen, red backlit Thermapen
Certified KCBS BBQ Judge