I have an 81 elcamino that i can't get a good 60ft time out of. The best that i have gotten to date is a 1.6973 and i think that it should be better than that. I purchased some double adjustable upper and lower control arms set to factory length. Equipped with a sway bar and some qa1s. The best past is 11.9033@ 114.56. I think that if i can get my 60ft down i will be at maybe 11.60 or better. I don't know if springs would help or not i was thinking about the trick springs but they aren't recommended with a rear sway bar. Here is a Video or my car maybe you can see something that i can't. http://www.youtube.com/watch?v=QmezVBtKc2A thanks Josh