Contour Enthusiasts Group Archives Forums Modifications Audio X-mas present

I'm kinda geeked. My mom asked what I wanted for Christmas, and I happened to be looking at an Infinity Kappa Perfect 12" on e-bay for $87 shipped. I know it's not the best sub out there, but it's a damn sight better than the 12" Rockford Punch I'm runnin now. My ??? is it calls for a 1.0 ft^3 box, and mine is 1.25. How much will this matter? I can always put in a piece of 2x4 to reduce the interior volume of my current box, but would it be worth it? Anyway, just had to share, my wife is already tired of hearing about my car, Lol.
Scott