Hi David, 

Hope you are well. The inner tripod housing with the splined input shaft was originally from Ford Sierra European model at least) and diff size was 7” 

The early model Sierra was 6.5”, most popular and bigger spline section was 7”, and much larger “Scorpio” model was 7.5” (much larger).  

Hope this helps.

Kind regards

Phil Abbott

Leave a Reply

Your email address will not be published. Required fields are marked *