Re: ZD Fairlane Diff upgrade.
hi. xd diff is 2 inches wider than zd. the diff will bolt straight in though. if zd was origionally a 6cyl you may need to use u bolts, and diff mount plates from xd also. ( some xy/zd 6's still used a smaller diff tube diameter) uni joint will be different( if u still have stock zd uni in place) so, if your trans is c4, bw or toploader 4 spd, just use complete t/shaft out of xd wagon, van, ute or zj fairlane . the hand brake cable will need some work because zd was drum rear brake and xd fairmont ghia is disc brake rear. you will only be able to use stock offset 6" rims with max of 215 tyre or the wider diff will cause gaurd clearance probs. or you could get custom offset rims done as i have for my xr and put 9" rims and 265 tyres on with stock guards! cheers