New jacks?

I understand your question and I did upgrade to higher rated jacks. Forget just what weight rating but they were noticeably more study. The result was somewhat noticeable but not overwhelming. Would I do it again given what i know now, probably would. Had wiped off the two rear jacks when driving through a dip in the road so at that time upgraded to the heavier jacks along with the Jack Savers on the rear.