No, none of us are sponsored and yes, we are running stock. Last night for example, Kinwald's best lap in Pro Mod. Sedan was a 10.1 while mine was a 10.3 with a Stock Pan Car.
You can get the un-tuned P2k2's at Hobby People and then change the brushes/springs yourself. In fact, SoCal had about 10 P2k2's in the case Saturday Morning but I don't know if they're still there.
We get 3-4 weeks on front tires and 4-5 weeks on rears if you're easy on the dots/wall. A sedan gets roughly the same # of weeks on a set of thier tires at SoCal but here's the kicker: you can buy mounted, trued, and ready to go Foam Tires for as low as $11 a pair at SoCal. That means the rim and everything as opposed to $13-16 for a good pair of Sedan tires plus then you have to buy rims, inserts, and the time/trouble it takes to mount them. For an example of tire pricing, look at:
http://rc4less.safeshopper.com/7/cat7.htm?3577 . Most of us run the "Green" compound listed under "standard."
The guys that have the tire truer mount thier own Foam tires. Then, a pair costs them about $5 since the rims are reusable but it's a pain in the rear. You don't otherwise need a truer for SoCal.