He didn't walk in first post with this, He has a few posts, all on the theme of Cheap, does he sound like a kid? yes.
But rather than steer him away and have him build a truck that's a rolling deathtrap with open exhaust that we all cuss.
Maybe start with...
A cold air intake may not always do what is claimed, most often they will cause intake temps. to be higher than stock, and may not protect your engine as well especially in an off road situation, Do some research before spending money.
Straight piping your 3.4? again, may not get the gains your looking for, but a good high flow cat and muffler will help your motor be more efficient, it will breath better. you may see some minor gains, These motors were never meant to be hotrods, but ask around, if you treat it right it will go 300K plus.
ECT is an acronym for Electronically Controlled Transmission
No more power, it just raises the shift points, keeping the motor wound up, It may seem like HP because your holding the shift.
If your going to cut it up, don't be a nuisance to your neighbors, We hate that Sh*t.
Just my thoughts..
My 17 year old is driving a 400 HP LS swapped drift car as his Daily, So maybe my opinion my be skewed.
It was funny, sorry to turn it into something.