Aston Martin DB3S Replica by WAM
289 Cobra with removable hard top by HAWK
Ford GT40 MK1 by Tornado sportcars
AK 427 Cobra, 6.3 V8
RAM SC Cobra (With removable Hard top)
The item you are attemping to add to compare is a different subtype to the items(s) in your list.
Only items of the same subtype may be compared.