Good afternoon Guys

I have a Tiger Avon with a 2.0 zetec with type 9 box

Looking to install an uprated Diff shortly


My number off the plate I think is (I believe is Ford Sierra)

83BG JD 392

4A 2K02 0248


Is this a 7" or 7 1/2 ??




Any advise welcome

Everything you need to know is here

http://www.super7thheaven.co.uk/components/sierra_rear_differential/

Simple check, if it has 1 long bolt going through the top mount it’s a 7” if 2 separate bolts it’s 7 ½”
The width of the top mount is near 7” for the 7” diff and near 7 ½” for the 7 ½” diff

The 7.5” diff doesn’t come with a 3.92 (it’s 3.91) - so you must have a 7” diff.