Cheers guys, I was really chuffed when I got them on, work really well with the style of the car / gaphics
I used Cobra springs, which claimed 40mm rear 50mm front for the 2.5 V6.
I queried this with them as when they arrived, the box said 2.0l Zetec 40mm / 40mm springs. I was told the weight of the V6 bungs the front end down to 50mm.
As mofo said, we'll see in a few weeks if it's changed
Are the ones you've bought like these:
http://www.dcdezign.com/products/cobra-lowering-springs/ford/cougar-2*5.html