Chevrolet Repair: INTAKE MANIFOLD GASKET, intake manifold gasket, bolt holes

Question
Dear Van,

I am trying to find the correct intake manifold gasket for the following vehicle:

     1974 Chevy K-5 Blazer 4x4
     350 V-8
     4 bbl carb
     From what I can tell the gasket length is approx. 19".  I do not know if that makes it a long block or a short block.  

Please let me know if more information is needed and I will try to provide it.  If that is enough info please let me know what I am looking for on the internet to order the correct gasket.

Thank you,

Paul Pukis

Answer
Hi Paul,
I haven't ordered any parts on the internet, but I would assume they would let you return unused, undamaged parts, so if you ordered both, one would be correct, and the other could be returned.
I don't know which would be correct, but a good parts house would pull one off the shelf and measure it for you, over the phone. You don't need to tell them you want to mail order your parts.
Measure from the center of the bolt holes at the ends, and tell them that, so you are talking on the same page.
Van