I know there are several threads regarding the removal of spark plugs in the 04+ 5.4s. I'm curios to if there are problems reaching any of the plugs as in older models. Also, if anyone recommends a certain brand of plugs. I looked at Rousch, but it says those are for a cooler spark, and I'm not sure if that will is right for my engine. I have a few mods done, and just looking for the right advice, and so far this is a kickass forum to be a member of. I have the AEM Brute Force CAI, Helix TBS, and Edge Programmer. I've heard that the TBS is just a waste, and would like more clarification on why if anyone can help me on that one as well. Thanks guys!