Front legs rear with level

Hello Together I’m 1.5years a Forry (sf -2000) unfortunately he has now left n hangs popo since he is with level regulation, I have problems finding used parts,I can’t afford it. 🙁 now I would like to upgrade him with normal feather legs. someone might have an idea where I get these and what it costs about ??? thanks for your help !!! 🙂