Dude... go read the "What was I thinking?" thread.
You are beginning to veer off on a downward spiral... and when you come to your senses, you'll go to grab your p-bass one day and realise that's it's not a p-bass at all anymore.
Then you'll freak out and want to sell it, and when you list it on eBay, Matt R will find it and it will be immortalized in one of his "HAHA! Look at what this guy did to his once awesome bass!" threads.
Seriously, though... here's what I think...
You're bored.
Your p-bass is probably fine... in fact, it probably sounds great. But... you've now been playing long enough where you're starting to figure out different sounds you want to hear in your head and, even though the p-bass sound is one of them, it can't be all of them.
P-basses are truly awesome (after playing for over 20 years, I'm just figuring this out myself and am now searching like a rabid animal for a good one), but they are kind of a one-trick pony.
Don't get me wrong... you can do a lot with them and they can transcend all musical genres, but... they still have one volume, one tone, and one pickup, and, if it can't reach a certain tone that's in your head, then you're SOL because a p-bass can only do what it can do.
So... here's my advice:
Your p-bass is kind of special... keep it stock. Don't fuck with the p-bass recipe. P-basses are like choclate chip cookies... they have like 7 ingredients but they're goddamned tasty. Never sell it. Love it for what it can do and what it does. There's a reason why so many people love them, and, even though you love them now, I think you'll probably even learn to appreciate those reasons more as you mature as a player and musician.
Start to explore other viable options... like multi-pickup basses... and active electronics... and onboard/offboard preamps... and amplification...
And start saving your money... or even take a second job, just to buy gear.
Experiment with other stuff and let different equipment get the tones you're hearing in your head... don't mess with your first true love.
\m/