Bizz,
The issue that you are having is with the seating cones.
The uprights are the same.
The lower arms are the same.
Some ball joints are 14mm and some are 16mm.
If you fit the correct seating cone then your issue will be sorted.
If you require preowned uprights complete with ball joints, boots, cones and nuts, or preowned lower arms then just drop me a PM as I have plenty in stock.
Remember that there are 3 or 4 different cone sizes throughout the front suspension.
Alex.