Re: How are the fralin PAF's split?
To my ear, at least in the bridge position, any vintage output humbucker (which is the type Fralin makes almost exclusively) is going to be a little thin-sounding for two reasons:
1) Unlike a Strat single coil, which is slanted, the screw coil is closer to the bridge from the 2nd to 6th strings, where it will pickup more treble and less bass.
2) One coil from a vintage output pickup (+/-8.0k) is about 4k, much weaker than your typical 6.5 to 7.5 Strat single coil.
You might want to consider wiring your LP for spin-a-split, which is a mod that effectively allows you to have a separate volume dial for the second coil. You can dial in just as much of the second coil as you want and have every sound from pure coil-split to full-on humbucker and everything in between (think P90 or minihumbucker-like sounds).
Another Fralin option, you could order a Fralin Unbucker which has deliberately mismatched coils. Fralin will wind a humbucker up to 10k, so if you wanted, say, an 8.5k total DC resistance, you could have one coil at 5k and the other at 3.5k so you have a stronger single coil tone in split mode. Of course, mismatched coils will give a more single coil-ISH tone even with the both coils operating in series at full steam. (Which is pretty much behind the idea of the Unbucker to begin with.)
fftopic: 
