extended fuel tank for C class

MDEECUSA wrote:
I have a 2021 jayco gray hawk Ford E450 chases can I install a larger or additional fuel tank?thanks for any help

55g is standard size. I don't think a larger tank would fit and never heard of anyone finding a supplier to fit an addition aux tank for gasoline in the E series . You would need the room to tuck it high enough between the frame.
The rear overhang on a class C might prevent anyone from installing an aux tank back there. I think ground clearance on driveway aprons etc would be the reason.