I replaced the original shocks with Bilsteins and 3 yrs later the rears were leaking oil.Replaced under warranty. I did the removal and installation. Not hard with big wrenches! 2 years later the rears were leaking oil again. Took them off and threw them in the trash and ordered Koni's. Took a few days to get them and about 2 hours to install them. Been a happy motorhomer every since. Ride is so much softer with the Koni's
I have a Magnum chassis with 4 airbag suspension. Take your time and you can do it.
Good luck
Busyguy