hey i was wandering if any one could give me advice as to what throttle body would be a good one to purchase. im looking to gain a little HP so i thought this might be a good place to start. if not let me know what would be. i have a 1988 iroc-z 5.0 5 speed

 

a larger throttle body or carb wont do you any good with a stock engine. Open up your exhaust and let the engine breath, then get a new cam and a valve job on your heads before you bother getting a new TB or Carb