These bearings are Clevite "P" bearings. These are steel backed bearings with an intermediate layer of copper-lead alloy and an electroplated lead-tincopper overlay.
Part numbers included in this kit:
Rod bearings: CB-1461P
Main Bearings: MS-1804P
Thrust Washer: TW-473S
***While we strive to keep these sets in stock at all times, please contact us to make sure the particular set you need is in stock.***