Small firebox

[Bobby Forrest]

So I just got a smoker project. The chamber is 36x62. But the fire box only measures 32x24x17 making it 65% of the recommended size. I know I have to redo the vents on the firebox, the hole between the firebox and the smoke chamber, add a reverse flow plate, and redo the chimney. Here's the biggest question I have. Can I make this work without enlarging the box? I'd like to be able to hit 350-400 for half chickens and 250 for smoking.
Adding wood often doesn't scare me. Thanks for the info.

 

[Bobby Forrest]

Here's a pic

 

[Bobby Forrest]

Got the throat opened and enlarged the intakes today. Figuring out where to put the reverse flow plate this weekend.

 

[BKING!]

Sorry for the lack of advice. I have no idea how to build smokers to make them draft properly. It seems your getting it worked out though!