Remove grease box from bottom.
Replace with flat mailbox with 2" spacers.
Cut 3" hole in mailbox to match up with same in bottom of smoker.
Mailbox is 10 1/2" by 8" by 3 7/8".
Campbells soup can is 3".
Fit can between the two openings.
Fit rectangular open-ended tent over can opening in smoker under heat element.
I figure mailbox lid will be adjustable damper.
Cut hole in top or back of smoker and install vent hood with damper, figure I can control flow from bottom and top.
Remove water and chip bowls and rack, replace with a new drip pan.
I'll try to post pics of planned materials.
Thanks ahead for ideas!