there are defo different versions of cossie iscv, i recently bought one and it was different internally, i have no clue which is which but the one i bought wouldn't allow the car to idle ( dunno if there is an adjustment ? ) but what i had originally on the car had only 1 spring inside, the replacement had 2 springs and doesn't work on my car ( yet ). i'll see if i can make a good 'un of the two, but it looks like they have different resting positions internally