Straps on lifted trucks with big meats might help, I use double QA-1's all the way around.
Since I race exclusively the 11.90 index I shoot for a 60' of 1.75. Given a decent track prep that will give me an 11.9x pass at 114mph on tune #1 damn near every tiime. 1.67 will put in in the 11.7x at the same speed. My best 60' ever with my truck was a 1.55 but that was not on tune #1. I run MT drag radials and about 20psi in the rear and 22 in the front. We check the before every pass especially on hot and sunny days since the side that is facing the sun will vary as much as 6-10psi.:thumb: