so i need some feed back on anyone whose ran a chevy. guy at work has an 03' regular cab short bed 4.8 with intake and exhaust. he's been riding me about how even with all my mods he can smoke me. very cocky guy, so i bet him lunch that i could take him. what do u guys think? are they even fast? hows their 4.8's match up to our 4.7's. gonna take it to the track (hopefully not street), but just wanted a heads up.