CV joints/axle time to replacement advice?
 

I have a 99 Boxster base 2.5L with a tiptronic. I need to replace the right inner CV Joint, believe me! I have no intention of spending $800 for a complete new axle. My car has about 90k miles on it. I have searched the internet and all I can find is replacing the boots but not the CV Joint. I have found rebuild kits for around $80.**** I am also considering replacing the rear axles with a used one from a car with lower miles than mine. I am a DIY and have done most of the repairs on the car myself. This includes:

replacing both coolant fans.
replacing/upgrading the brake booster with update kit to eliminate water issue this included draining/flushing/replacing brake fluid painting caliper and adding drilled rotors.
adding an S center radiator.
upgrade dash to a C4 996.
replacing seat motors and switches.
upgrade stereo/speakers.
upgrade to aftermarket exhaust.
replacing spark plugs/tubes/coil packs.
replacing engine compartment cooling fan/sensor.
replace front bumper with a 996 unit.

Some of the questions I have:

Are the TIP and manual transmission axles/CV Joints the same?
Is there a detained DIY for rebuilding the CV Joint if so can someone point me to it?
Are there differences between the axles between years? 97-99 cars, are they the same?
It seems like there is a difference between first gen cars 97-99 and post 2000 cars? is this correct? are the axles interchangeable? would I be better off getting axles for a latter model car?
Does anyone have experience with this repair? if so are you willing to discuss with me?

If you just need to do the inner joint, you can do it with the axles in the car. Replace both inner and outer boots while you're in there. Not a hard job but dirty.

Why don't you ask Woody for a low mileage half shaft? You will be back on the road in no time, and these shafts are pretty tough and easy to replace...