for the plugs, most will say to gap about .055. yes straight forward. dont torque too much, just snug. i dont have specs but you could find them if it would make you more comfortable. if the fronts take longer than 15 minutes, your doing something wrong lol.
a tune will reduce knock, thats the main reason to get it. its going to increase fueling as well as tweek some other things. if your going with a "tune out of the box" be careful where you go. i know first hand that zzp's has pretty aggressive timing and would probably be better off on a stock pullied, MAYBE 3.5, car. if you want you could kill 2 birds with 1 stone and find yourself a used powrtuner. then, you could scan and tune yourself. after you get access to the powrtuner forum, you can also download the dhp 1.5 file to get a baseline.... worth looking into so you dont have to spend the money on a canned tune then later buy something to scan.
rule #1: never mod without scanning. just because the car has no visual/audible problems, doesnt necessarily mean its running good.
