i have a 02 Z71 silverado with a 5.3L, can anyone give me some advice on what they would do to upgrade it, and were they would get it from. i am looking for just the normal 4x4 stuff, rims, tires, exhaust, chips, and anything else. help!

 

http://www.nelsonperformance.com/index.html

Talk to Allen Nelson about a tune

 

I have the same engine in my 01' as you and the first thing i did to mine was get a 77series K&N cold air intake off of brand new off of ebay. After an easy installation i noticed good gains and it looks great under the hood. I then instead of cheaping out spent a little more on the exhaust and got a magnaflow stainless steel dual catback. Its a great exhaust system that sounds nice and loud like a Borla. Not cheap and redneck like a flowmaster.