Edit ^^ What he said too... I must be a really slow typer!
The HRC kit is certainly the best bang for your buck (and yes it includes a cam, also larger headpipe (06+ only), jets/needle for carb, cut lid for airbox (04/05 only), subharness that changes ignition mapping and ups RPM by 1K (06+ only), larger diameter tailpipe insert, and a bung for the air box resonator. It's not an all out balls to the wall kit.. but it does make a good, noticable difference to the quad, but not at the expense of reliabilty. All for about $300.
'06 TRX450ER, '03 XR400r, '04 CRF450r, '05 CRF250r, '06 CBR1000RR (StreetFighter), 07 GSX-R750, '71 CB500, '75 CL360 (Honda Scrambler), '81 Virago XV750 (the 110 Bike).
06 Black TRX450ER (Conv to kicker) "Medium" Big bore! Quikshrk (OCP), Demon, REAZ bits.