I cannot find a supplier for the bushes as shown. These are the drop link upper mounting bushes which fit onto the top wishbone spindle. Suppliers here in the UK supply the drop links c/w bushes, (but what they have done is modify the upper drop link so as they accept the same upper wishbone bushes - which makes sense.) The lower bushes, drop link to sway bar, are readily available.
Interestingly, the upper drop link attachment, has edges which are rolled over, (see photo's).
I am thinking of carefully grinding off the rolled edges and machining some back to back poly bushes with a steel sleeve. What has everyone else done here?