can any one help we are in the midel of swoping out the gear box and front diff and iv just looked and the diff in the car has got 47 teeth and the new one has got 51 can we get away with putting the 51 teeth diff in or has it got to be the 47 in there .......HELP ASAP PLEASE

 

There's no way you can change just one gear of a pair to a different size!

 

all sorted now mate thanks for your help on this mater