Bushes

[banpei]

Like you said, the ride will firm up when you install poly bushes. I've driven with partly installed nylon bushes (rear axle). I remember the nylon bushes to give a tremendous amount of road noise, and when I switched back to OEM, it was like night and day. I've driven with a friend of mine who installed the polybushes all around, and it was definitely way noisier than mine, but not as bad as the nylon bushes. But I also remember it giving a much more direct feel. Nowadays, mine only has the stock rubber bushings. I still have a set of Prothane in the shed, but I haven't had the urge yet to replace them.

Flos.ie sells the Prothane kit, but Powerflex also offers every bush individually:
https://powerflexstore.co.uk/toyota/corolla-ae86-rwd/

In Japan, there is no single kit available, but various suppliers (Cusco, Tecarts) offer parts of the kit.
Tecarts offers polybushes:
http://www.tecarts.com/catalog/urethanebush.html
And Cusco offers reinforced bushes:
https://shop.kts-web.com/products/116-91...ac25&_ss=r