Ford 289 Valves for /6 - what a deal!

here is early Ford exhaust valve specs: Melling V0742
Coated Finish Yes
Grade Type Regular
Length 4.867 in.
Length 123.6218 mm
Lock Groove Quantity 1
Locks Included No
Material High Alloy Steel
Oversized No
Seat Angle 44.0 degrees
Stem Diameter .341 in.
Stem Diameter 8.660 mm
Title Engine Exhaust Valve
Valve Head Diameter 1.450 in.
Valve Head Diameter 36.830 mm