I would imagine you could do OK with 4:10's and SC or Turbo if you do some suspension work. I know nitrous can run with 4:10's, but you dont hook worth crap without some up/lower rear control arms and maybe subframe connectors....

 

Do you have a real solid PLAN to get an s/c? and exactly how realistic is that plan? not trying to dog you or nothing, but a lot of people plan to get something and never managed to do so. So if you "would like" to get an SC or turbo, i say go with 4:10's. If you "Know for a fact" you will be getting an SC, then i'd run with 3:73's

i know i'd love to get an SC, but chances are i never will. So i figured i would get what i COULD and i went with 4:10's. I am hoping to do my cams, all depends on my stocks and how they go in the next couple months. I would LOVE an SC, but they are way expencive and i figured i very well may never get one. So 4:10's for me!

 

Oh yah, and 4:10's CAN be done with an SC. you just got other stuff you would have to do in order to hook. i think the rear end can handle it, you probably wiould just need to work on suspension, which wouldnt hurt regardless.