1997 1500 upgrades?
 

i have a 1997 chevy silverado 1500 with a 5.7l 350 vortec engine which has only around 2000 miles on it im looking for upgrades for power and fuel economy i have a cold air intake and a bully dog programmer in mind cant really think of anything else off the top of my head input would be appreciated. Also would like it if you guys had any places you preferr to get your parts that are cheap or have good warrentys. thanks.
Edit: i am also having the transmission rebuilt with a beast plate and shift kit.

Power and fuel economy don't usually go together. But if you want a real power boost get a supercharger for it, all the other add ons only result in minor improvements in power.