2010 Acura RL rear shocks replacement information

Hi Eric,

I hope you will answer this question, as I have posted one over 3 months ago, but never got any reply.

On my Acura RL, there is a thumping noise in the rear and I have checked all other suspension components. Mostly likely I may need to replace rear shocks. Acura only has left shock assembly in stock, but right shock and other components will need to be bought separately. So the question is, do you recommend me buy rear shocks and just transfer the plastic boot/cover, bump stops, washers and upper shock mounts from the old ones? OR you recommend replacing most of aforementioned parts(plastic boots are in great shape)?

Thanks!