Does it really make a difference, 1 3/4 vs 1 7/8? I just turned down a pretty good deal on a brand new set of Kooks/cats because they were "only" 1 3/4. $900 brand new in the box. The Maggie goes on this week and I just want to make damn sure I'm getting everything out of it. It's also getting the 10% harmonic balancer,which should push boost up to 10 lbs or so. As I understand it, the rule of thumb is blower=wider headers. I know this has been argued before but I'm just looking for reassurance before I whip out the plastic!