Why do you think you need to replace a bushing? Is it because it is worn?
I did this type of work on my Maxima. The symptom was that suddenly the arms started contacting rear edge of the hood and I realized that arm shafts were lose in the pivot bushings due to eating up nylon with find grit from rust.
By that time the screws holding the pivots to the body were thoroughly seized and I had to drill the heads through and break them off.
The pivots came as whole units, the busings were not sold separately.