Bushing Kit

[SekiguchiUeno]

Prothane is sure worth the money it costs, you will notice increase of vibrations especially on rear trailing arms (upper ones).

Powerflex, some say they are not worth the extra money over prothane,and are good for racing because of very high stiffnes.

But there is another choice Superflex and they should be good.
You can buy them at Fensport.co.uk they use difrerent molding proces to achieve less vibration, they use diferent compounds for every bushing group to eliminate movement and vibrations. (how far is this marketing i dont know) i have one set in the box waiting for install.

And TRD is rubber but if its so hard as the motor and Gbox mounts i have on my car then it is not more confortable as prothane set i think.

To answer the original question: If you buy complete kit from prothane for 85-87 GTS this will fit on your 84 zenki. Prothane even delivers more bushings for different stabilisers in the same set.