I bought that kit also. The filter and adapter are about 1/4" smaller than the MAF. Top end throttle response suffered. I had to get a larger adapter and filter. The intake pipe is really good though. All said and done, I probably paid as much as one of the other kits.

Black '99 Contour SE Sport S-AFC II | 7" S&B Filter w/Cold Air Box | Ford Racing Wires Yo-Dude wye & Exhaust | Konis | Roush Springs | DMD F&R Strut Tower Braces | BAT 21mm Rear Torsion Bar Poly Bushings | Alum. Dbl. Wing | SP Powerset