x and h pipes

Im Going To Do The Flowtech System From Summit Wit The Xpipe, And The Un- Corking Plate That After The X Pipe, On A Pretty Warmed Up Street 340 Solid Cam Motor, What 3inch Mufflers Should I Use?? The Cheaper The Better For Me ,im On A Budget,i Was Looking At Summits Mufflers, Or Hush Thrush Turbo??????? Anybody??