So just to confirm to everybody I have now repaired my vehicle using a gearbox from a 3.3 petrol voyager. I purchased a 52 plate with head gasket failure for £200.The car had done 68k with one owner and full service history. I drove the vehicle for 36 miles without fault and if im honest it was a shame to break the car as it drove perfectly. I figured for £200 I would have a go and see if it would work. Well the answer is yes all though there is 2 slight modifications you have to do. 1: On the 2.8 gearboxes you will find 2 bolt holes under the rear diff, the 3.3 only has one and its in the wrong place. Easy to sort just alloy weld and make second hole. (I suppose you could just ignore it because its only one bolt but I like things to be right) 2: the hoses at the front as Neil said are incorrect. Rather than using hose I simply unscrewed the fitting and replaced with the correct fitting from my 2.8 gearbox. Fits perfect. I did use the torque converter from my 2.8 but looking the 3.3 would fit no worries. I have driven the car around 50 miles and all is perfect. So how much has it cost for this gearbox repair: Scrap car £200 Gearbox oil and filter £36 total £236 But then guess what, as I have bought a full car I can now either break the full car which I haven't time to do or sell to scrap yard. I have chosen the later and they are collecting it and giving me £125. So this gearbox repair has cost me £111. I did look at the internals prior to fitting and can also confirm they are the same. hope this helps somebody else in the future as on my quest to find a gearbox everybody told me it couldn't be done and that a gearbox is £500. Well they were wrong