Matt Williams has recalled wingers Andrew Trimble and Simon Danielli to Ulster's starting XV for the must-win Heineken Cup Pool 4 showdown with the Scarlets at Ravenhill on Friday.
Danielli, the Scotland international, will start on the right wing, with Irish three-quarter Trimble on the opposite wing.
Fijian Timoci Nagusa is ruled out with a hamstring injury and Mark McCrea drops to the bench.
Williams said: "We are still in the Heineken Cup, but we have to win all four remaining games.
"We are playing every team in the pool and if any one of them slips up, which there is a strong chance in the Stade Francais-Harlequins match.
“If we win our next two games, we are in it.
"But that will mean nothing if we don't win at home. But even if we were out of it, which we are not, the attitude wouldn't change. We would still go flat out at Ravenhill.
"We have worked too hard and been through too much pain so far to come out at Ravenhill and just say, 'it doesn't matter'. That's just not going to happen."