I bought the (Stance gr+ pros)for my s14 from this guy that posted on TampaRacing, and Zilvia. Before purchasing he told me they still had about 4 months warranty which was true and stated he had a warranty card and invoice of the purchase (Found out this information because he text-ed me who he spoke to and where he purchased it from(Enjuku Racing... Sale's rep was Bg.. I spoke to Andrew and BG. They both told me that the coils Brian L Kasper purchased November 4 2010 were the Stance Gr+ for an s13).(Found this all out after i purchased the coils and Brian was stalling to send me the invoice, and warranty card) I asked him kindly and told him i would like proof of this before I purchased the coils( He insisted that he would bring them when he would drop off the coils) and I agreed. Upon arriving to my residence I looked at the coils and then asked him for the paper work. He then tells me that he forgot it at home and would mail it to me if i purchased them. I told him i would need his license information and that he would need to sign a contract, stating that the coils were indeed stance gr+ pros, that they were still under warranty, and that he would send the warranty card within three days. He had no problem leaving all his information and signing the contract. Now he does not want to refund my money Beware of this seller. very very shady. I will pursue this to the fullest and in hopes receive a refund. I tried calling and resolving this issue but Brian is in no way wanting to return my money.