improve performance on an 03 sierra

Been kicking around beefing up my 03 1/2 tons sierra. Exhaust, cold air intake, chips, helper springs and maybe something to calm down the side to side roll. I probably wont get all this stuff at one time. Anyone have ideas or experience with this kind of upgrade, and what is the best bang for the dollar.
thanks
joe

MY EXPERIENCE IS YOU CAN ONLY DO SO MUCH TO HELP THE PERFORMANCE OF YOUR 5.4L ENGINE. CHIPS HAVEN'T PROVEN MUCH TO ME IN A TRUCK THAT ALREADY RUNS GOOD STOCK SO UNLESS YOU WANT TO OVERRIDE THE FACTORY SPEED SETTINGS AND SHIFT SETTINGS THE CHIPS ARE NOT THE WAY TO GO. I HAVE TRIED JACOBS IGNITION COMPONENTS ON OLDER 350'S AND FOUND A LITTLE MORE LOW END TORQUE BUT STILL NOT WORTH THE COST. IF YOU REALLY WANT IT TO SCREAM ADD A SUPERCHARGER OR GO TO YOUR LOCAL SPEED SHOP FOR PERFORMANCE ENGINE PARTS (HEADDERS, INTAKE MANIFOLDS, CRANKS, ETC... ) I WOULD SUGGEST INSTALLING A K&N AIR FILTER AND MAYBE REPLACE THE MASS AIRFLOW SENSOR. THE "POWERRAID" THROTTLE BODY SPACER DIDN'T DO MUCH FOR MY OLDER 350 SO I WOULDN'T MESS WITH THAT EITHER. JUST INSTALL A SWEET SOUNDING EXHAUST AND DRIVE IT. DON'T WASTE YOUR CASH ON ALL THE LITTLE BS STUFF THAT WON'T MAKE MUCH OF A DIFFERENCE ANYWAY. MY DADDY USED TO TELL ME, "SON, YOU CAN'T PINSTRIPE A PINTO, IT'S STILL A PINTO." YOU CAN'T MAKE A 5.4L ENGINE INTO A 500 H.P. ENGINE BY PINSTRIPEING IT!

HEY, I FORGOT YOU ASKED ABOUT IMPROVING THE RIDE. I INSTALLED A SET OF EDELBROCK IAS SHOCKS ON MY '93 Z71. THEY WERE WELL WORTH THE MONEY!!!!!