from what i read on another site the cold air systems actually let more
heat in to the engine raising the intake temp.
the guy that did the test with a few different cai systems also
stuck a drop in K&N and on the dyno the drop in was the best bang
for the buck.
i read somewhere else that the SRT bottom air box is made different than the
RT/SE air box and if you swap that out and go with the K&N you would have the
best package
personally i went with the K&N and used the balance of what i saved to buy my
70 go wing.