The inside just looks thirsty, I'd do as above, small fire to get temps going then lard the heck out of it. Outside....media blast or sanding then a good coat of the high temp paint. Firebox....always going to rust. Scott
Oh It'z BBQ!
6 Kayaks(tarpon 160i, 2 tarpon 120's, a hobie outback, hobie tandem, and a Kaskazi Dorado)
Carolina Skiff J16 - "Calusa Wanderer"
1 Weber Gold Series Grill
1 Smokey Joe Platinum
1 XL Big Green Egg
KCBS Certified Judge #9079