i recently bought an 08 silverado 5.3 and added a CAI and 40 series flowmaster. Looking to add headers just dont know which ones are the best; LT or ST it doesnt matter to me just looking for the best performance. also looking for other mods like plugs and wires, tune, anything. thanks!

also im looking to see if anyone has or knows of a 2-4 drop for the truck as well.