Hi guys i was wondering if i could get any advice of upgrades for my ute. Its a vz ss 4sp auto 06 14000ks and the only upgrade so far is 2.5inch stainless steel pacemakers from cats back. I want to finish the exhauts and put in a otr mafless tune intake, i am thinking of maybe putting in a cam package down the track but need to know if i should get tri y or 4 into 1 headers and go 3" system and take out the 2.5" or leave it. Also need advice on upgrading the auto trans for quicker shifts eg- best products going and finally any bolt on performance parts. Thanks of any help.