Worcester's Sixways Stadium hosts the clash, which is the first time that the Saints and Tigers will have met in a major domestic final. And director of rugby Jim Mallinder said that this will provide some extra spice when the local rivals run out to face each other.
"When you start the season you only play in three competitions and you set out to win all three," he said. "Unfortunately we got knocked out of the Heineken Cup so we're left in two. We want to win both of those, and this starts on Sunday with the match against a Leicester team which showed all its qualities in the win down at Bath last weekend.
"Recently they've been playing well in the Premiership and LV= Cup and getting good results. It's going to be a very competitive game, very physical, and tough at the breakdown and set piece.
"But nobody wants to get to a final and lose - it makes for a depressing trip home. You want to get there and win, and that's what we've been focusing on all week."
Tickets remain available for Sunday's game. Prices start at £20 for adults with junior tickets just £10 throughout the stadium and supporters can order theirs directly from Sixways by calling 01905 454183.
NORTHAMPTON SAINTS TEAM TO PLAY LEICESTER
LV= Cup Final
Sixways
Sunday, March 18th, 2012
Kick off 3:00pm
15 Paul DIGGIN
14 Vasily ARTEMYEV
13 George PISI
12 James DOWNEY
11 Scott ARMSTRONG
10 Stephen MYLER
9 Martin ROBERTS
1 Soane TONGA'UIHA
2 Andy LONG
3 Paul DORAN JONES
5 Christian DAY
6 Calum CLARK (capt)
7 Tom WOOD
8 Roger WILSON
Replacements
16 Ross MCMILLAN
17 Alex WALLER
18 Brian MUJATI
19 Mark SORENSON
20 Ben NUTLEY
21 Ryan GLYNN
22 Ryan LAMB
23 Tom MAY