axle

Does anybody know if there are heavy duty/severe duty axle shafts for IFS Chevy trucks? My 2001 k2500 8.1L 4l80e 14BFF has 210,000 miles on it now so I am wanting to update worn front end parts and want to go as HD as possible. Thanks , Griz.

had this rebuilt w/ 4:88's about 7 years ago. I only put a few hundred miles on the truck before I parked it because I couldn't get it to pass smog. I've since upgraded to a Dana 60, so this needs to go. Asking $300 obo. Don't really want to deal with shipping. I'm located on So Cal (Victor Valley).

'98 GMC SAS