No tank moving if you run a 16" inner (like Lowboys Pics above). If you want to run the inner 22s you will have frame clearance issues, therefore the tank will need to go somewhere. You may could plate and pocket the frame rails to step them inwards toward the center and get the clearance you would need.
Another option you've got, just came to me, is to go to a short bed tank, which is a good 12 inches shorter plus. That'll give you enough room to build a new rear frame clip narrow.. enough to run inner 22s as well.
Dude thats exactly what I am looking for!!!! Thats how I want mine to sit, guess I am going to have to run a teen on the inside.
Is that thing set up like with a 6 link? Maybe its the pictures but it looks to me like there are 2 link bars running from the back side of the axle to the back of the truck with the bags mounted to them... Am I seeing that right?