By your 60', I think you were asleep at the wheel.
j/k
Seriously, I believe your ass-end is probably all over the place. You at least need new upper and lower control arms, preferrably adjustable ones but not a necessity. Factory Five Racing makes a NICE set for a decent price. Lowering springs would be a good investment, as well. A shot Traction-Lok didn't help either as you found out; I suggest an Auburn replacement.
Overall, not too bad on street tires and a stock rear. You get a cookie.
What RPM were you shifting at, BTW?