Ford 351 1.9 dia. intake valves (TRW #V3220X). to replace any Stude V8 intake.

The length of the valves is within 1/32 of the length of the stock Stude intake 
valves and the increased flow will really wake up that 232. For a street driven 
car, it is great! You must be careful that the intakes do not touch the cylinder
 edges