3:55 gears on the street
to each his own. my old M body I had 3.55's a lock up 3 speed and 27" tires (255/50R70) HATED it because it was revving >3k at 70mph....terrible mileage and very fatiguing....worked great with a 42RH and a .69:1 OD, though....
on an A body, where you're likely to have 26" tall tires, I think the deepest gear I'd go for without an OD is a 2.94. my duster has an A833OD, 323's, and 215/70 rear tires (26" tall) and it will keep up with traffic on the freeway without being too stressful