its a killer. i went to the track when it was 45* and good DA before i put the roller rockers on and i was going 14.1 at 98 on with crappy 60 foots. 2.17. this time out i had the 1.8 roller rockers and good tires cut a 2.02 60" and could only do a 14.2 AGH.
even the n/a cars were off there times tho so i dont feel to bad.