Aaarrgh, I'm gettin all confused again
If you check the alfa155.com site and look on the "technical specifications" page it lists the silverstone as 9bhp higher, some owners on there have said the same too??
Not aware fo the stiffer sportspack springs so I'll check that out.
Not sure about the V6 and quickrack, some say they were narrowbody cars with widebody body added...........aaargh!
Now you know why we gave up trying to sort it on 155.com
I give up!
wrinx