was to the track last weekend went 12.19@111 with closed single exhaust.it has headmen shortys and 3 inch pipe into a 3 inch flowmaster 80 series.last year with the exhaust off and extenitions on it made my trap speed 3 to 4 mph faster. so will open exhaust make it fast enough to run the 11.99 im looking for or will i fall short.also my sixty foot times are around 1.77s

 

Drop that exhaust, pick a day with good weather, 11's are yours

 

install a 3" cutout

 

Get rid of the flowmaster for a straight thru muffler and you can do it with closed exhaust. I picked up almost 3 mph when I ditched my flowmaster