My E450 had had hydraulic levelers and the frame did not have any problem. Of coarse they were up front as well as the rear. So I would say you could do what you want. Ask Winne were they should be attached.
Jim & Pat
2018 Vesta 30T
our 2003 31' Minnie had this issue when we took it out our first time. There were no stabilizer jacks, I think that is something that is more recent for the Class C's. I got two scissor jacks mounted to the back frame and two pyramid style jacks for the front that I'll slide under the frame to snug up to help.
We are taking it out this weekend to see if that fixes the problem for us. Our local RV repair guy says it should help a lot. I will report back on Monday.
OK, we tried it out this weekend with the stabilizer jacks. I think it made some difference but not a great amount. I am not sure how much to tighten them up so maybe I didn't tighten them enough. So the jury is still out for me on them.