How can I tell if a pair of wishbones are definitely Spec C items when looking at them?

 

They are alloy like normal ones.

 

I know they are, that's why I need help with distinguishing features or marks

 

What's so special about spec c ones?
What wishbones do you currently have?

 

Increased caster. I suspect one of mine to be bent, so just looking to upgrade at the same time as I replace.

 

I suspect tracking a set down won't be easy but there's much easier ways of gaining good castor. Alyn at aS Perfornance modified a set of standard Alloy arms for me. To create High Castor arms. Not only were they a work of art, they are a proper solution, not some bodge job sold as "modified" arms like other companys are selling.
They work really really well. Speak to Alyn

 

Check out the final few posts on this thread (it's a good thread)

https://www.scoobynet.com/966161-as-...ervices-2.html

 

Well as it happens I paid for a set this morning so really I'm keen to check they are what they should be when they arrive but I will deffo take a look at the alternative you've suggested if there's an issue at all.