The 2 mustangs we took were 2014 5.0L 6spds with stock size drag radials. Most people were going 13.25 & slower (depending on their experience) I'm proud to say I was the only person that broke into the 12s. 12.98 was the best et in either mustang. Have to say they took the abuse. Pretty much ran non stop for 5hrs. & no breakages.