WTF? I didn't say they DID NOT come off of an Si. You got confused.Here we go again could you please tell me the diffrence I would love to know. Please explain how you know these taillights didnt come on a si. What if I told you they did could you prove me wrong.
The Si was a '99-'00 model only.
The taillights you posted came on ALL '99-'00 Civic coupes. The DX, EX and HX coupe taillights were no difference.
The ones that were red, white and amber came on the '96-'98 models. You said these were '96-'00 Si taillights. There is no '96-'98 Si in the US and even if there were those taillights would not have come on them.
So even if they did come off of a '99-'00 Si, it makes no difference. It's like saying "Si fenders" or "Si hood". They're all the same as the other trims.