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Hi all, I currently own a 309 gti 3dr, phase 2. I would like to make it 4wd and have found some info but not much online for a 309 gti. I have researched some parts and I have found a complete rear end from a 405 4x4 1993 I can also find prop shaft and front hubs and driveshafts. I am yet to pull the trigger on these purchases. I currently have a xu9j4z engine, what would be the best gearbox to use? Bearing in mind, I will be aiming for as much horsepower as possible, turbo, rebuilt forged engine, cams, ect. So a suitable box that will not grenade would be ideal. How much modification for a 405 1993 onwards 4x4 rear end to fit the 309 gti, including mounting points and will the width of it foul the arches with wheels on? Will the prop shaft need to be shortened at all? Is there anything else that I'd have to take into consideration? If theres some custom work needed, any recommendations as to where to take it, I'm based in Essex so somewhere local to me would be ideal. Suspension will be getting upgraded as wil brakes. Thanks in advance Jon