1-1/8 & 1-1/4 front sway bar vs factory 7/8?

Is a light coat of grease needed on the polyurethane bushings? I dont think the hellwig sway bar bushings are greasable

The Hellwig bushings and mounts are greaseable. At least the ones I got with my 73-76 sway bar are.

A light coat of grease on install is always a good idea though.