Ford has the front track bar standard on the 2006 and newer F53 chassis. There was no 2005 chassis year so you might want to check your chassis date and take a peek under there. I doubt a different one would be much of an improvement.
My 2008 chassis has one and I have no major complaints about the handling except in very high cross winds ill get the tail wagging the dog. A rear track bar may help with that and is on my wish list but low priority.
2009 Georgetown 350TS (bunks)
400W solar, 440AH 6V GC2
2009 Ford Edge AWD Ltd towed
2011 Honda Fit Sport towed