This is a site that sells plans that are engineered for the smoker you are going to make. I say that because they keep this site working and they have real plans for your best cooker.
Current Smokers: Backyard RF Offset and Hybrid RF Offset trailer rig with Cowboy cooker and fish fryer, always room for more........
I have found a tank it is 120cm long,and 105cm in diameter.that is that is 3.9 feet long and diameter is 3.4 feet. That is the size of 1 tank i want to put 2 tanks together. I have the guys that can do the welding and cutting but never have build a reverse smoker so I need plans. It hard for me to call the Us from jakarta do these guys have Skype?