Re: p90 and filtertron
yeah you'd have to re-route the body to accomodate a soapbar/p90 the tv jones route is going to be close to a humbucker route and won't be wide enough to accomodate a p90
that's ok though the tv jones pickups are pretty awesome he has a model for just about anytype of tone you are after the magna-tron gets a dearmondy vibe, the classic is a straightforward filter tron paf type, the powertron is kinda a cross between a gibson paf and filtertron paf, the supertron uses rail magnets instead of cylinders/screws
they also offer the TV-HT which is a great single coil
all those should fit your guitar