Quote:
Originally Posted by napa68
FWIW, I don't think it makes a difference on a car with manifolds. Buying good valves and a good valve job should be to be MORE than ample without enduring the additional expense.
Of course, that is strictly my opinion. I've never found my opinions to be in high demand. 
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Speaking of useless opinions, I'm wondering why bother having the heads opened up to correct size valves when it will be breathing thru manifolds and not driven hard. No one, but you, will ever know they are the small valves unless they look with a scope. Pulling a valve cover and verifying correct cast date will be about as far as any, normal, person would go on an inspection.