The Wolves set up their third Wembley date in four years with a semi-final win over Huddersfield, and they will now meet Leeds Rhinos in a repeat of the 2010 final.
However, they have five Super League games before the August bank holiday showpiece, looking to close the three point gap Wigan currently hold on them at the top of the table.
Westwood told the club’s official website: “It is a great feeling. It shows that as we didn’t make it last year we were desperate to get back and achieve that. Now we’re there, we’ve got five weeks to concentrate on the league before we get back into the Cup mode.
“It will be a tough game. They are a bit unpredictable at the minute but we will go off what they did in their last game which was probably the best they’ve played all year. Rangi Chase is back this week too and he’ll be looking to put in a strong performance. But if we concentrate on what we need to do and on getting our things right, I’m sure the result will come out way.”
Warrington face Castleford at the PROBIZ Coliseum on Sunday (3.30pm kick-off), with Tigers stand-off Rangi Chase in line to make his first appearance since being suspended by the Tigers.