OK I will try to post in each of the pages from now on.
About the racecars: I see lots and lots listed as "racecar" which are exactly as you say: based on production cars. But if you say so I won't bother with them anymore..

these 2 I have commnented on their pages...
http://imcdb.org/vehicle.php?id=762194 --->1970 Dino 246 GT Series II [607M]
http://imcdb.org/vehicle.php?id=1063825 --->1970 Dino 246 GT Series II [607M]

sI = L
sII = M
sIII = E