QUOTE(sixaddict @ Dec 30 2009, 07:30 PM)
Would not have asked the question if that was the answer. Difference is what makes it unique and important to a 6 restoration .......Reason I am sure is I checked with a couple of sources one being Stoddard and they gave me the number that happens to match what is on the muffler. Thanks for your input
Agreed, Stoddard is an excellent source for vintage parts and information.
You have the correct part for a proper restoration.
As to prices, I troll eBay constantly. In the past 18 months, I have seen three of these NOS 914-6 mufflers come up. One sold for $465, one for $565 and the third is an unknown. For the third, it seems the seller got excited by an email from a potential buyer in Sweden. Up to this point, it appeared the seller did not know what he had. The seller ended the auction early after getting a Buy It Now price request from the Swede.
Hope this helps some.
Bob