Fuel tank sizing and mounting

Trying to get a handle on how to plan my next big project on my truck

Ignoring looks for functionality, ill be using rhe kw j hangers. Whats the weight rating on these each? Seen 2 for a 120 gallon tank, but is it enough for a 150? Usually see 3 on those.
Presumably 3 on a 120 would be fine but overkill?

Whats most of yalls prefered mileage range? Ive been doing it 2 years om about a 600 mile between fillups, but thats a little short sometimes.

 

Ill be dropping the skirts soonish, at most twin 120s at 24.5 dia would put me 4 inches behind the tail of my skirts.

When you say wide band, you mean wider than the 2 inch standard one that everywhere seems to think 150$ each is a good price on?

At that price i will certainly be making my own straps, what is the relative benefit beyond looks for a wider strap? As i understand it, it is primarily to hold DOWN the tank not up, and the ends still seem to be 2 inch and then the single t bolt so im not quite sure why i would go wide band.

 

I did the same, pretty sure 75$ for a single grimy beat up strap buys a LOT of duct tape and baling wire

 

6 of each and 6 more of the lh strap anchor....

2924.16$ before i even look at tanks... wtf?








VERSUS

2 of these kits
Plus 200$ shipping
Taxes putting it near 1200$





Can anyone convince me of the wisdom of buying either oem replica or aftermarket instead of just having my dads shop plasma cut the parts and weld assemblies for a custom setup?

 

Truck in question



Shorter, brand new tanks
replace steps with w900 style
fiddle boxes around, make room for generator side mounted on frame