As mentioned in my Roll call, my mid 90's #2828 did not come with sfb. I have seen the the air inlet design has changed and no knockout pattern is stamped. If i recall the oem sfb was mounted using the prestamped bolt holes shown in pics below after removing damper. As i move along rehabbing step by step it's still putting out good Q and until another smoker is found, would the new style fire box ($80) be adaptable w/o being a pita? I know it looks a little roached,but steels in good shape, and has no physical weaknesses. The food doesn't care and nobody has complained . I've seen 20# propane tanks modified as sfb's . Have no thoughts of getting rid of it since it can always be used as a large grill but if something can be added it would work out better. Don't want to sand blast and paint until resolved . Any thoughts??