a few simple ?s to beef the stang

[gt96]

hey guys this is gt96 again i once again am here to ask a few ?s since everyone has helped me tons already!

AIR SILENCER: what is this? what does it do when removed?
T\B & MAF: would it do anything to upgrade these things?
180 STAT: what is this? how does it help?
PORTING PLENUM AND T\B: can i port my 96 composite plenum? and t\b? if done what possible problems can occur if done wrong?

if anyone can help i appreciate it i know a lot about my car but i hear and learn new stuff everyday! thanks fellow enthusiasts!