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As for the numbers.
O trim is 2.28" exducer/ 2.91" major
P-trim is 2.54" exducer/ 2.91" major
Q-trim is 2.69" exducer/ 3.11" major
The pitch of the turbine blades also change from O-trim being the most shallow to Q-trim being the most pitched. Basically is all comes down to topend flow vs. spool time. Q-trim will stay going up top, the O-trim spools up faster, P-trim is in between (which is why it's the most common).
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2000 F-150
SuperCab 5.4L, Flareside
S&B, Flowmaster SI/DO, T. Perfomance Dual Electric Fan Kit, ATI ProCharger P-1SC (12 psi), Snow Methanol injection, Jet-Hot full length headers, offroad exhaust
www.cardomain.com/id/2000blk54
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