Possible to build a solid 8.25" ?

Ok I have a 8.25 with 2.46 (i think) gears in it. I have to redo every thing on it, brakes, oil, gears, clean it, sand it and paint it.
Was thinking is it worthed, or anything I will do I will probably break it when the car will a little more power, anyway?

I want to have a gear around 3.21 or 3.55, won't do a lot of highway, and mostly playing with, just cruising and maybe 1/4 mile.

If i'm able to go the way I want, the car will have a mild 360 (350hp is it mild?), so will a 8.25" ever be able to build to transfer that to the ground (both tires) without breakin every time I want to burn a little bite of rubber?
Will it be more expensive then 8.75 on the long run?

In that article they do build a 8.25, but with 2.76 gears...
http://www.moparmusclemagazine.com/projectbuild/155_0410_mopars_projects_rearends/