58 plate Gen1 997 Targa 4 Rear spring colour / code / rate?

Hi Guys

So my back end dropped last night...thankfully only the car! Turns out a snapped nearside rear suspension coil spring :sad:

It's a 58 plate Gen1 Targa 4, I can see what appears to be a little yellow marking at the top of the spring but can't see below it. Can anyone help with a part number and/or spring rate?

Also, spotted the below for sale, would these be harder or softer than my current springs does anyone know?

997.333.531.1A.504
997.333.531.55.504
Spring ID: Pink/Green

Thanks

Beanie

No 6 here and if you can see yellow then i think 6d as thats violet yellow and the only one listed with yellow .

http://www.deroure.com/diagrams.asp?TBL=2825&MAK=3&MDL=26&SMA=0&SMO=0&ST=&SC=0

Personnely i would phone opc parts and get a quote on the spring cost , let them look it up .. then just ask for the part number