I'm looking to change out my rear gear from 3.42s to 4.10s. During this, I'm thinking of having the whole deal gone through. What would it cost?

- Install of 4.10s (I'll provide them)
- Install new bearings and seals.
- Possible rebuild of carrier (it turns at 25 ft. lbs, and I think spec is 40?)
- considering rotating spring perches on axle to get proper pinion angle for cruising.
- Axle tubes welded? Worth the trouble for a car running high 12s (with 1.80 short times)?

Any input would be appreciated. Any alternatives to the old standby of Advanced Driveline?

Todd