One pair of rocker arm assemblies for the Y Block Ford and Mercury, 1:54 ratio. Each set has been thoroughly gone through with cleaning, inspection, new rocker shafts, replacement rockers and bushings as needed, and resurfaced tips. The pair will ship in shrink wrap with installation instructions. 
 
Each rocker arm's stamping will be ECG 6564 A2 or B2.
 
Note: USPS Priority Mail shipping to all 50 US states is included. Foreign purchases please inquire.