I was waiting for you to get on here matt.
I think it's time for you and Ahmad to race
I'm going to have to disagree with you about there being more modded P5s than WRX wagons. Maybe here in Dallas since you hang with the mazda crew, but I doubt nation wide it's even close.
back on topic:
A) Who would win flat out 1/4 mile
Turboed P5 with a proper set up could take a
stock wrx wagon
B) Better Car (value)
We all know a stock car retains a higher value than even a lightly modded one, and you would have to do some heavy modding to get a P5 to beat a wrx in the 1/4 mile.
C) Better Car (mechanical)
I think the WRX would still be a better mechanical car becasue it is functioning within it's normal limits. For the P5 it'd be operating at +200% of it's original limitations after all the modifications. This just leads to increased wear and chance of damage. That's why we all say "You've got to pay to play."
I'd say the modded P5 would make a better show car and race car than a stock WRX wagon, but there's no way a daily driven one would come close in reliability.
Plus you'd be getting somewhat close to maxing out the P5's power potential just to reach the starting point of the WRX.