Identify these springs?

[T6.1SB]

Hi i need some replacement rear springs for my T6 T32. See attached picture of current one that has broken. Can anyone tell what these are just by looking?

 

[CRS Performance]

Cobra ! , They are cheap kits but I dont know if they sell spares or complete kits only £200.00 approx

We will have a replacement in our own brand, just need to do both as there a better design and might have a slightly different rating