What rear end gears should i just for good highway and street use?

i have on my 70 gto th400 transmission and a 383 stroker with a mild cam i dont know the cam specs i forgot. and my rear end a 10bolt and my tires on the rear are 275/60/15s what good rear end gears would be good for highway and street use and i dont race it i just want that extra punch for the street and good highway performance aswell something in the middle of both highway and street