The vehicle: 1960 109 regular converted to a Dormobile in 1996-97. Lots of worn out parts were replaced with newer model Series parts.
Brakes: Dual circuit power brakes from a SIII. Rocky Mountain front disc brakes
Drive train: 1970 Ford 302 with 1991 Mustang 5.0 fuel injection. Custom aluminum radiator, Mercedes V8 electric fan, Borg Warner T-18 gearbox, Series transfercase with Ashcroft high ratio kit, Custom Great basin rear propshaft, Rear Salisbury moved 1-1/2 inch rearwards from the stock location, ARB air locker, Great Basin hardened rear axles. Front end is Rover with Range Rover Classic pumpkin, Trutrac limited slip carrier, SeriesTrek 24 spline front axles. Front propshaft is custom Great Basin Rovers with narrower than stock dia, long slip joint and high angle yolks. 4.75:1 R&P. Wheels are Dicovery steel wheels with 255/85R16 BFG Mud Terrains (33.3" dia).
Suspension: One ton springs with sheets of high density plastic layered between each spring leaf. The result is a strong spring with the vertical movement virtually identical to parabolics with very little side sway. Extend shackles (6 degree wedge under front axle to correct kingpin angle) and great basin greasable poly bushings.
Power steering using a Scout II steering box.
Fluids: 2 front under seat fuel tanks plus a rear fuel tank for a total fuel capacity of 42 gallons.

Rear tank filler parts came from a D110 heavy duty & were supplied by Rovers North
Built in 15 gallon drinking water tank, built in 5 gallon propane tank and a 2-1/2 gallon compressed air tank filled from a Quickair2 compressor.
Body: rear side behind wheel trimmed horizontal for more clearance (I kept bending the bottom coming off rocks), diamond plate attached to bottom skirts, I haven't needed sliders yet but occasionally scrape things with the side skirts. Series III left inner wing panel for clearance of the power brake system.

Outer wing panels are for an Euro spec early Defender (no holes for side lights). In the above picture you can see a Donaldson horizontal mount canister air filter and prefilter mounted to the underside of the wing top.

Above picture 2008 on the California Mojave trail
Hard top sides are the front of an 88 windowless side and the rear of an 88 sliding window side connected together to make a 109 regular side with sliding windows. In the picture, the front filler is for the left front fuel tank and the one behind it is for the water tank. All the parts behind the cap have been replaced for the water system. The rear lift gate has been side hinged so I don't catch my hair going in & out of the rear.
The roof of course came from a wrecked Dormobile as did most of the interior. The interior would be a would different subject, but includes toilet, bed, 2 sinks stove & refrigerator