New to C bodies

Joined here not too long ago, lots of good info and folks around here. Just got my car on the road yesterday. Spent about 5 hours cleaning/washing/waxing it up. Got about 50 miles on the books already. Yes, I don't like the wheels either but the stockers are toast. My speedo cable is good but (verified by drill) so do I need to swap out something in the tailshaft now?

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Author: jjg73