Spence on a mission to halt Henson
Spence is back in the mix alongside international Paddy Wallace as Ulster hope to continue their hot streak and move up the RaboDirect Pro 12 League.
Coach Brian McLaughlin re-jigs his backline further with Stefan Terblanche moving to full-back and Ian Whitten pushed out to the wing. He can also call upon prop Tom Court and back-row forward Chris Henry as well as recalling hooker Nigel Brady up front to boost a side that has secured six bonus-point wins from their last eight outings.