Early Jeep vehicles were equipped with a single channel-type cross-member that mounted directly to the frame rail with two bolts on each side. The mount had approximately a 4" drop from the bottom of the frame rail and provided a pad for positioning the transfer case support donut. The donut gave the transfer case additional support and flexibility which prevents it from splitting. It is important that you retain this donut location with the same type of support. If the transmission mount is moved on the cross-member, then the transfer case mount location will also need to be relocated. We offer a cross-member mounting bar, Part No. 716017. It is made from 6061-T6 Aluminum and is precisely machined to help retain your stock rubber support. Additionally we offer new rubber supports Part No. 716003 (Jeeps 1941-79) and 716021 (Jeeps 1972-79).