WHAT DOES R33 RB26DETT ENGINE FOR SALE MEAN?

Ok so I checked out their substitution F20C, and referred to as the organization to request over it. the guy over the phone instructed me the motor was pulled off a ninety nine′ and it had 55k miles. I questioned if there was any way we could decrease the price for your motor he stated keep on about a fe, then i heard chatting in the background,