I can do most simple stuff myself like changing the exhaust housing on my T34 & fitting big brake kits & the like but i do'nt think i'm upto dropping the rear beam down myself in the garage. If i'm going to fit a Grp A diff mount would it be a wise idea to just have the whole back end poly bushed at the same time to save more work in the future as my front end is poly bushed but the rear has never been touched, if so i think i'll take it to the garage & get it done

Is it best to poly bush all the rear bushes or best to replace with the original ford ones bearing in mind the car does about 6 trackdays a year.
Thanks Simon.