Whether you are doing a transmission swap or just have damaged components, 5.0 Resto has replacement 1979-93 Mustang bellhousing and spacer plates for every application. Ford Racing and Quick Time offer bellhousings for Tremec, T5 and T56 transmissions for 5.0L and 5.8L engines. Since you already have the bellhousing off, its a good idea to replae the spacer plate as well. A damaged or missing spacer plate can cause serious starter problems. Add a set of stronger bellhousing bolts to replace any bolts that have become stripped or lost or rounded off.