This tank hold 35% more oil then our standard XX tank.  It bolts in stock location, All our HD oil tanks are built from .120 thick 5052 aluminum, internally baffled like stock tank, and extra compartrment is baffled from main compartment to keep oil from sloshing. CNC fittings, fully tig welded and pressure tested.  This tank come standard with 12mm drain plug that will accept a quick drain, which is a must on the XX to make oil changes clean and easy. Included is 12mm drain plug and seal washer. Free Shipping to the lower 48 states, please contact me for shipping quote elsewhere.