Another problem with 9-inch Fords is the downward bending forces. When strengthening a stock Ford housing, a tube mounted below the housing (between the respective 4-link brackets) is mandatory, especially in a high-horsepower application. This technique is also used in the JBRC fabricated housing. Bickel's housings include this four-link shock absorber wheelie bar bracket assembly on either end. The four-link brackets encircle the axletubes and are designed to support the case assembly. This effectively adds four more bulkhead supports.