So many choices out there, I grabbed a Case Tractor poly fuel cell that holds 45 gallons. Designed a wraparound cover with storage on both sides and over top of fuel cell. Post width of cab and height to window and I’ll scale mine to PDF. You can mount gun, ski, snowboard or tool rack over top. Going to mount (2) tractor supply 19”x 16”x 37 tool boxes on the back.