I am refurbishing a set of wheels which is missing the disc bolts at the REAR

I tried ordering them through the Ducati dealer but I am told the code has been discontinued and that there is no replacement; most of the times part numbers are are replaced by other s used in different models, apparently this would be one of the odd cases where there is no replacement.

I am thinking that maybe the ST2 ones are the same (maybe longer?), does anyone know?

The disc retaining bolts on most Ducatis are the same, usually M8 x 20 with a low profile hex socket head.

Which would be available at any Fastener supplier, probably a lot cheaper than any Ducati supplier!

Actually you would be very much surprised... the ST2 rear brake disc bolts are priced around 0.75GBP (1.25$) from the local ducati dealer.

Sometimes it is worth giving them a call to find out, certain parts are veryy expensive, others are surprinsingly cheap.