New Member-Couple ?s

First off I just want to say hi, this is my first post here. I was referred here by someone who knows Dan McClain, they told me if I need to know anything or get any opinions on my 'Stang you guys could help me out A couple of my questions are similar to the ones in the other post on this page about throttle bodies and mass air, except I have a 4V Cobra instead of the 2V GT. So what do you guys think is best for throttle bodies? The BBK twins, MACs, or does it really matter who makes them? Also, if I put bigger throttle bodies should I worry about mass air? Will I see no difference from the throttle bodies if I don't upgrade the mass air along with them? My next question is about short throw shifters. My Cobra is a '96 with the 5 speed. What kind of shifters do you guys use? Will any of them dramatically shorten my gear throws? They are kinda long. Sorry for the long first post, any help/opinions would be great!