I see nobody has answered the OP's original question yet.
i just got my vortech kitted SRT back yestrerday. and the shop actually had a problem with the fitment of the air filter. this is due to the factory HID's. they called vortech, and vortech sounded like they werent aware of this issue. they thought my car must have aftermarket lights.
vortech was informed that they were factory lights. as far as i know, the SRT8 300. is the only LX that comes with HID's. which would explain the short sight on vortechs part.
vortech doesnt have a fix for this yet. so they just said to squish the filter a bit, and get it in there.
the shop was able to get the filter to fit, by pulling the wiring harness there up a bit. but they figure that might be hurting the power a bit. but vortech will send me the parts, once a fix is created i am told.
my numbers were 360hp before. and 460hp after. the dyno operator was impressed, because he says his dyno usually reads 15% lower than other dynos people have run on.
but 460whp seems about right to me. with a 15% drivetrain loss, that puts me at 530bhp. vortech claims 540bhp. so its not too far off. im not sure if the dyno had a built in correction?? i didnt really have a chance to go over things. i picked my car up after a big trip, and i had to drive 6 hours to get home. so i didnt get to be as thorough as i usually am.
once im back on days off, i will do a full right up, with pics.