At my local track most machs run 13.5 or so depending on drivers. The lowest bolt on mach i saw was a 13.1 dont know what gears he was running.
On a side note you and that trans am should be neck and neck, and a bolt on gt shouldnt even ride next to you so you cleaning his clock makes alot of sense. My bros mach 1 when all it had was a catback x pipe and diablotune ran my two room mates 00 gts with full bolt ons and 373s the mach 1 would take them both, one of the gts was even on a 75 shot of nitrous and he would still put him out in 4th gear.
[COLOR="red"][SIZE="5"]MM FOBRA CLUB MEMBER #1[/SIZE][/COLOR]