The set of rockers for two cylinders (four rocker arms) are for cylinders #1 & 2. The set of rockers for three cylinders (six rocker arms) are for cylinders #3, 4, and 5. Also, the different rocker arm assemblies fit between the cam tower/bearing assemblies and the distance between the cam tower/bearing will prevent mounting the rocker assemblies in the wrong place.

Good Luck!
Tom

__________________
America: Land of the Free!

1977 300D: 300,000+ miles

American Honda: Factory Trained Technician & Honor Grad.
Formerly:
Shop Foreman;
Technical Advisor to Am. Honda;
Supervisor of Maintenance largest tree care co. in US for offices in Tex.