Allright I am getting ssac headers with in a week or so but was woundering if i can drop down to a 3.4'' puelly safley or would I need a tune in order to do this? and my plan was to get a tune when i get different rocker arms (which was my next step). and the mods I have now is a cooler set of spark plugs, 180 degree thermostat, cold air intake, and a 3.5'' puelly