Thanks, I have access to a good machinest and that mod shouldn't be a problem.There is one on EBay right now FYI.
http://www.ebay.com/itm/FIAT-128-RA...479784?hash=item3f7fa54f28:g:f7YAAOSw3utY6USH
I would expect you will need to adjust the angle for an X, there is plenty of meat at the base mounting to shave it down to the correct angle.
Would this work on a X1/9?
http://www.fiatspider.com/f15/viewtopic.php?f=11&t=35568