I don't think that a 1.7 60ft. is BS at all... I was looking through my old timeslips (most in the 2.0 - 2.2) and found a 1.881 on a 14.11@93.6 mph pass in 1997... on a 225/55 Michelin ...heh,heh I found a 3.05 also
a few 1.9's too ...it's a pretty big stack of slips.
...And then I bought slicks and my first NX nitrous system and went to 1.5xx's 12.7sec on a 75hp shot and 11.7sec on a 150shot
with more to come soon!!