Help 33-34 draive shaft in shortened 40 rear end tourqe tube

[hellmet]

here my delema i have a 40 rear end and torqe tube. the bearing in the middle came apart as in the rubber around it came apart. it has been shortened to fit a 32 chassie i always have had a vibration since i built it. at speeds between 53-63 so ive heard they dont make the bearing with the valcanized rubber around it anymore and was told take a 33-34 drive shaft shorten it and use it in place of the solid 1 inch 40 shaft in it now. anyone deal with before im at a loss. thanks. billy