318ti.org forum - Important Shock Question!!!

Hey guys,

I am wondering if you guys can tell me how to tell the difference between Bilstein HD shocks and Bilstein TC shocks. I previoulsy owned what i thought was HD shocks, i had installed the rears assuming HDs. Then i totaled her and decided to sell the shocks.
They were black, not yellow, does that anyting to do with HDs or TC? Are there ways to tell the difference besides the color, like number in the code or something.
I apologize to the person i sold them to and i hope we can work something out, i am creating this post only to help generate information about the shocks for myself and for the person i sold them to. Hopefully if they are not HDs we can come to some kind of an agrement and hopefully i can get my money back from whom ever sold them to me.

Thank you guys!