Here is the current babble flying around.
The C&L 76mm MAF is the hot ticket. It seems to be making more power than the Pro-M 77mm MAF.
The Pro-M 75mm MAF has/had calibration issues with injectors other than stock sizes, especially the 24lbers.
The Cobra 73mm MAF is better than stock, and that's about all people say about it. From the word, it's not as accurate as the aftermarket pieces.
Basically, there isn't a whole lot of hard data floating around about the MAF's that I've seen. Quite frankly, I haven't been looking much since my Mustang was SD until I picked up the 02GT last week.
