Trying to decide which cai to buy. I can get the K&N(63-3053) for $199.95 plus free shipping. The other I am considering is the Lingenfelter(LN4229). That one can be bought for $209.95 plus free shipping. Any input guy's? The K&N claims 13-14rwhp where the lingenfelter claims 12rwhp. I would appreciate some input from peeps that have either of these setups. I also read where Pontiac was voiding warranties on cars with the K&N CAI but does that also apply to the Lingenfelter?