Pilot300

Hello, I am in the process of getting rid of the lurching problem from shifting to R and D. I replaced the trans mount which wasn't too bad and motor mounts look fine. Inspecting everything I noticed my drive shaft flex joint is bad (multiple cracks) as well as the front diff bushing (bushing allows diff to move about an inch once put into drive). I have the diff with only one front mounting point (passenger side). I have found the bushing but it seems to have 2 smaller bushings that go above and below the main bushing. The ones on the car are done for and can not be reused (completely degraded). My main question is where can I find these for sale/ what are these called? I have not been able to find them anywhere. Is it something I NEED to go to the dealership for? Is there aftermarket bushing that makes them unnecessary? I will attach a link of the bushing I am looking at purchasing and in the add, there is a diagram with the bushings I am looking for/ talking about. Any help would be greatly appreciated. I have not been able to find info on these specific bushings in the forums. Would prefer to order aftermarket bushings if possible as I live pretty far from a dealership. I have found something that looks to be what I am looking for on NAPA's website but it clearly states it is not for the 97 ls400, will attach a link below the original add link. Thank you again.

link to add with the diagram
V

https://www.walmart.com/ip/Febest-TA...xoCijIQAvD_BwE

Link to questionable NAPA bushing
V

https://www.napaonline.com/en/p/ATML2997601

Pilot300

Sorry for the post. I found the bushings in the diagram. They are called rear differential mount stopper.
41653-50030 upper
41654-50020 lower.
They are specific for my manufacture date and might not be correct for all 97 ls4's Had to be ordered from the dealership.