I can confirm that a mature member of the Lancia Motor Club takes his S4 out every Sunday afternoon in the spring/summer months.He has said to me in the past what a remarkable difference there is in the agility between the S4 and the integrale.
Parts situation is a classic case of knowing where to look,and not being what you know but who you know.Nod,wink,nudge,old boy network,lashing of toffness etc etc...
(You dont get that on OUR Club
)
There will always be this bone of contention over which has the most pedigree.
I dont read up on histories etc being a more hands on kind of ghuy.
IIRC Lancia have won more Rally Championships though.....