8.25 sure grip recommendations

I have a stock rearend limited slip and need to go with the Auburn gear locker it's a 3 speed on the floor with 425 hp The rearend is perfect as I can drop it down in 1st or 2nd and have plenty of torque and drop in 3rd and run 70-80 easy down the highway
I haven't checked the gear ratio but do you think I can and should get a Auburn gear with the same ratio? Thanks