rollbar wroteYa, 460 etc. but U could choose some different tanks. The one thing I like about them is that they have a departure angle built into the tank.
RollBar
I agree they are nice. If I recall correctly they are thick enough that they act as thier own skidplate. I am actually looking at the 30gal one for my XJ (since my tank is like 17 gallons from being dented on the trails). That'll have to wait until someone donates me some money!