Ok so basically I'm lookin to build my 10 bolt, i know everyones gonna say just buy the 12. but I wanna keep my car "factory stock". now can I just buy some hardened axles and it'll hold up a bit? or do I have to go new everything inside too? I want something that can hold an ET Street with a stall basically tryin to get the car to hook full throttle off of the stall.

 

your fighting a losing battle.. But for the sake of research Go for it! Moser Sell's a stout axle for the 10 bolt.. That along w/a decent LSD and a good set of gear's.. Nothing bigger than a 3.73 as the 4.10's tend to be really weak in comparison.. and a Rear end girdle should Keep ya on the straight and narrow.. W/ a A4 car you should be pretty good w/ that.. A4's tend to be softer on the rear's..

 

Both Moser and Strange sell hardened axles for the 10 bolt. There are a few other things you'll want to do to strenghten the rear. Get a stronger posi and stronger gears. Like stated above, stay away from 4.10s. Use a solid pinion spacer rather than a crush sleeve to prevent any movement. Install a stud kit. Weld the axles tubes to the pumpkin. The most important thing would be to have your suspension built to minimize axle hop. That's what will really kill you.

 

who sells strange direct fit axles for 7.5????