Ulster make two changes for Scarlets

Ulster coach Neil Doak has made two personnel changes and one positional switch to the team that recorded a bonus point win over Ospreys last weekend for tomorrows game against Scarlets.
Andrew Trimble was unavailable for selection having suffered a hip flexor strain, therefore Craig Gilroy switches flanks and starts on the right wing, with Rory Scholes coming in on the left.
The other change comes in the pack, with Peter Browne starting his first competitive game for Ulster in the second row in place of Dan Tuohy.