.im new to the forums and I know you guys have heard these questions before but I just got my first stang 89 gt convert. my first question is have any of you guys used the ngk v power plugs. I also have a taylor cap and rotor I want to bump the timing from 10 degrees to about 13 im running 89 octane. I want to know would that still be in the safe zone. I also want to do a k&n drop in filter and remove the air silencer. and I also want to put a shift kit in the aod what is a good one I was looking at summit racing and found a b&m for 38 buck are they any good. but my main question is with those upgrades would a custom dyno tune help any in power and torque. and if I did a dyno tune do I need a new chip or can I burn a tune into the stock computer. how much gain could I expect with those upgrades.