integra runs jammin 21&dynamite pipe then thats what id get. and wow if your spendin 4bills on a radio then you can pick choice. id maybe run over to the radio forum to weed that out. i run a cheapo dx3.0 and it gets the job done. if id upgrade id prolly go dx3r or dx3s(dont think its out much yet tho) on ebay. are you looking to race or what?