I am going to replace my rear foam shock bushings. I would like to put in the poly bushings like I did in the front suspension on my xk8

In the front I used front poly mounts for the strut
https://m.ebay.com/itm/Jaguar-XK8-1997-2006-Urethane-Upgraded-Shock-Mount-PAIR-MJA2170BD/311509183326?fits=Model%3AXK8&hash=item488764eb5e: g:lUoAAOSw5cNYbUU-
Front shock poly mounts

And upper poly control arm bushing. Worked out amazing. Thinking about drilling and taping a hole in the arm for a grease nipple.
https://m.ebay.com/itm/Jaguar-XK8-Front-Upper-Top-Wishbones-Bushes-in-Polyurethane-1996-2005/372062178284?epid=17017003886&hash=item56a0a24bec: gO8AAOSwnlFaVjb0
Front upper control arm poly bushings


anyone have input on this rear poly shock kit?
http://www.motorcarsltd.com/jaguar-xk8-2002-suspension-shock-bushing-kit/
Rear poly shock kit.

or have any suggestions that are 70/80 grade poly urethane bushings?