With the AOD, I would get the 3.73's - maybe even 4.10's. 3.55's with an AOD wouldn't be worth it in my opinion.
You'll be fine with a daily driver and 3.73's or the 4.10's.
Good luck with your decision.
E
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1991 5.0 LX Coupe - 40,750 miles
331 cu. in. / Tremec 3550 / BFG Drag Radials
12.22 @ 114.31 mph - w/1.89 60'
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