Saw these SuperPro poly bushes (bit of a tongue twister!) on eBay. I think I’m going OEM, but these caught my eye because there don’t appear to be many (any?) other eccentric bush options if you want to try polyurethane.

https://rover.ebay.com/rover/0/0/0?mpre=https%3A%2F%2Fwww.ebay.co.uk%2Fulk%2Fitm%2F253284956197

https://rover.ebay.com/rover/0/0/0?mpre=https%3A%2F%2Fwww.ebay.co.uk%2Fulk%2Fitm%2F253284956197