Hi! I want to buy some auto parts, from Summit Racing Equipment and they ask to me that: "We do require a complete copy front and back for the Master Card."(with card number)! With that card, I already buy auto parts, from LMC Truck, but, they don't ask to me that! They (LMC Truck), receipt the payment and, I receipt the auto parts. Why the Summit Racing Equipment ask me for card copy? This is normal? Is usual, for on-line payments? What do you know about that? You do this before?