I have no idea on most of your questions, but the 40/40 seems like a good starting point. I have noticed by observation that competitive STS rubber gains about 2 seconds over sporty all seasons, on a 65 second course. Enjoy!
Sedan Revolution #103
focus in storage. hit a rock with the oil filter and locked it up.
gotta sort out a 351w 4 door fox first, then the focus gets a 2.5
commuting with a v6 5 speed mazda 6 wagon.