355's are standard fit on some cars,I am led to believe the porsche 944 turbo had them, you could try selling them on a porsche website.
I bought some years ago when my saph was standard, when I told dave allwood he told me to "chuck them in the bin and get some 803's" as he would never use them!

sold them back to pj motorsport of 20 quid less than I paid for them.

steve.
Ps I notice that rst in skipton was taken off the listings..bit of a bummer