Could someone give me a link to all classes with restrictions, i. e. GT500, GT3, NGT, TB4, etc.

Is this what you are after? : http://www.lfsforum.net/showthread.php?t=76057

It would be good if it wasn't so full of shit and superfluous classes. NGT is short for XFR+UFR, TB(O)4 is TBO+LX4, GT500 is just GT1 but FZR has -1%+10kg and finally GT3 is from CTRA but renamed as MoE took the GT2 name.

Yes, that's what I was looking for, thank you.

E: Boothy, these were just examples, I know them