I completely understand the sleeping on the couch thing. The good news is... its worth sleeping on the couch for the supercharger
To be serious and get the most bang short of a supercharger... and the order I would do them
Here's what I would do for performance on the cheap:
Cat back exhaust. Get a Corsa sport... I have the Borla which in nice... but the Corsa sounds nasty and wild. It'll put a big smile on your face! This alone might make you content.
Performance air intake... take your pick, many good ones out there...
Get a programmer and dial in the exhaust and air intake... the Guru's here on the board can advise...
Then sit tight.... and wait for the chance to supercharge...
And don't forget to wheel you H2 frequently!
Remember... the best truck in the world in the one you have a set of keys to.... Fantasy trucks in magazines are just that... fantasy. Enjoy what you got... it's an awesome truck!