Some technical details of the GG dakar replica / package, as translated from here (it's in Greek)
Gas Gas 450 Replica
449 displacement
5 valves, DOHC
5 speed gearbox
Magura hydraulic clutch
Keihin FCR-MX 39 carb
Magura Shiver 48mm closed cartridge forks (seems like the Ohlins TTX is for the factory riders, damn)
Ohlins 888 rear shock
Galfer 260mm front brake rotor (plus extra 300mm disc with longer caliper bracket), Nissin 2 pot caliper
20L rear subframe / tank
6L +6L front tanks
weight, dry: 123.4kg
seat height 940mm
Carbon fibre air box
skid plate with toolbox + water reservoir
included: Road book holder (doesn't say which), Gas Gas multi-instrument (I think a Vector) plus 1 ICO computer
rear cush drive hub
DAKAR SUPPORT PACKAGE
1 mechanic per 2 bikes for the whole race
Team manager for logistics
T4 truck, that can carry small parts per rider (up to 10kg)
T5 truck carrying sleeping equipment, 1 large bag per rider (tent), 1 spare engine
Transport of bikes form Epsilon HQ to Le Havre
Bike rental option, Gas Gas 450F Rally Raid
PRICES
Gas Gas 450F Rally Raid rental option for Dakar 2013 ?11000
Support package ?15000
BIke price (after the rally) ?5500