The weakest link in the Magnum XL upgrade kit is the transmission mount, it's a made in China piece designed for a V-6 Ford Explorer that retails for about $10.00. I discovered mine was cracked during a pre race inspection and was able to find a nice replacement made by Energy Suspension…..part # 4-1148G…..bought it from Summit for $50.00….anybody running a Magnum XL should put this on there to do list this off season.