Esspo has them. They know which size you need for factory shackles.
I have been lubricating all my suspension bushings with synthetic disc brake grease for decades now. I never assemble any bushings without it. It won't attack rubber or plastic, won't wash out and has 3 excellent additives in it. It significantly reduces sticktion of the moving parts and eliminates squeaks. It's one of the best lubricants I have access to.
