On my '73 Road Runner I replaced the metal gasket between the brake backing plate and axel flange I think they were $1.5o each. I used RVT gasket sealer between the brake backing plate and the bearing retainer as I could not find a paper type gasket like came off of it. I also decided to grease my old bearings (which looked great) rather than replace with overseas bearings. I used a greasegun Needle to get in between the rollers. Be sure to ajust the bearing tentioner on the passenger side.