[earl87gta]

I have a sky jacker lift on my 68 so i know they make a lift for the 67. in 67 the front sperings were only 2.5 wide and the rear springs were 3 wide. from 69 up the rear was 2.5 wide and the front were 3 wide.
As for the rock well I think most people say its only good to 55 miles an hour or so becuse any thing faster then that and it is so load you cant think. My wife says it sounds like a jet plain taking off.