i dont know if this is a kill or not, but last night i raced my friend in his 200X silverado with a 6.0l he has intake and exhaust and is probably around 400RWHP, i only raced him because he said he was keeping up with a 99 fbird V8 the night before, so once he told me that i said, "lets jump on the highway right quick"
we went from 30 mph, i was right in my powerband in first gear, i murdered him needless to say, he was cool with it tho he didnt give any excuses he only said "kinda what i expected"
as for the firebird he said he was keepin up with i dont know the story there.