rear axle was lifted directly from the SWB Transit 80, hence the need for the front adapters to match. The later P100's gearbox was simply a lower ratio version of the popular Ford T9 gearbox which was also fitted in some earlier Transits, unlike the car version of the Sierra the Type 9 was used up until production ceased - the cars had been updated in 1989 to the MT75 box. While this was a stronger box, it did not use a slip joint yoke so was unsuitable for use on the P100, as it had a live axle compared to the cars independent rear setups with non-moving diff units. Engine options Ford Cortina Pickup (Mark III) 1.6 L 4-cylinder OHV 2.5 L V6 OHV (Essex) Ford 1-Tonner (Mark IV) 3.0 L V6 Ford 1-Tonner (Mark V) 1.6 L 4-cylinder 3.0 L V6 Ford P100 (Cortina Mark V based) 1.6 L 4-cylinder OHC petrol, 2.0lt 90ps Ford P100 (Sierra based) 1.8 I4 TD (1753 cc; ) Endura-D engine 2.0 I4 OHC (1998 cc; ) Pinto engine; Modifications In recent years the Sierra-based P100 has gained a following in drifting and modifying circles, and many are becoming modified to include Cosworth engines, which are based on the truck version of the Pinto block. There are many Ford P100 Pickups which have been modified by their owners. The running gear from any Sierra and certain running gear from the Ford Granada can be fitted to the front of the P100. The rear suspension is vehicle specific, with the Capri/Mk1/2 Escort atlas axles being interchangeable, however it requires much more modification (other than simply bolting in) to fit Sierra independent or any other rear running gear. Many modifiers have converted their P100 to Sierra XR/Cosworth drivetrain and running gear. The very fact that they are so easily modified under the bonnet and inside the cab has made the P100 extremely popular in modifying and cruise circles. The Cosworth BOA 24v and YB 16v engines are a popular choice. Rover and Ford V8s are also a common swap, the former being the same weight as the Pinto unit. Other modifications include: Changing front hubs from Transit style wide spaced 5 stud to standard 4 stud Sierra hubs and fitting the back axle from a similar width 4-stud Ford vehicle - e.g. Ford Sierra XR4x4 to allow lowering and 4 stud standard alloys. Replacing the