That Yellow GMC supposed to be faster than that....I know that guy...and supposly it has a modified 6.0L engine wit a 4L80E Tranny or watever its called....very disapointed to see it run a high 13s.....he was talkin trashin on how he can beat my 04 Lightning.....I have run 13.3 wit just a k&n filter.......so when ever u want to race me...tell me....i'll be ready.....but anyways cool truck........what did the black GMC run?