Out of the 3..70's would be without a doubt the best. Muscle cars everywhere you went. All the late 67's 68's 69's and early70's where out in force at night. Loud pipes and burning tires and smoke..what a time. Couldn't go down the main st w/o someone wanting to race. It was affordable and most every guy had one. And...you were able to actually work on them yourself (wrench) everyone wanted a Sun Analyzer Diagnostic It was truly a great time to be in your late teens or early 20's love my SK tools too.