I looked at that one on ebay mate and had a few emails back and forth with the seller. Mainly what put me off to be hoenst as he seemed unsure. Heres what info he gave me, hope it helps.
hi mate. which exact model was this removed from? A 954?
I believe it is off a 00/01 954, i have matched it with a set of original 954 downpipes to confirm.
ok mate thanks, the 954 is 02-03 the 929 will fit too but before that won't.
Sorry mate, i have got my wires crossed, it IS a from 929, i am going off my nut here as i have been dealing with stuff from 4 different models across the range, it definatly wont fit an earlier blade as i tried it on my one.
I will change the listing right now...