Our v2 oil breather boxes are made of aluminum lids are cnc design with filter lid boxes use of a knn filter and 10.9 grade bolts to lock it down. The box is dual baffled that means no oil will spray out filter! boxes use racetronix -10 in 2x or x4 and a -6 drain comes with cap box is made to free up space while utilizing the small space we do have to spare, no major cutting is necessary to fit! old ac driyer bracket tab must be removed and coolant resivor bracket muct be banged flat. Box holds 2qts and drain can be used as an optional drain back to the motor! This product is built to order no refunds so please allow 4-5 weeks to make and ship