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Tupac back story www.adultfyi.com/read.php?ID=50911

from www.tmz.com – Two porn companies are going head-to-head in a ferocious battle to buy the rights to the Tupac Shakur sex tape … and TMZ has learned the first bid is well into 6-figures.

Sources close to the person in possession of the tape tell us … neither company has actually laid eyes on the footage … but both sites are serious about acquiring the rights.

TMZ has confirmed … one of the potential buyers is a site called YouPorn — and YouPorn honcho Corey Price tells us the site has made an official offer to pay $150k for the tape.

According to sources, the person in possession of the tape believes the offer is “way too low” — and is willing to hold out for more money.

We’re told the seller has been in contact with a second, unidentified porn site, which has vowed to beat the current offer — but only if it can screen the footage first.

As TMZ first reported, the footage was shot in 1991 … and it features the late rapper receiving oral sex from a woman while rapping, drinking and smoking a blunt at a house party.