N11 off-road muffler-pipe set for sale.......

[David K.]

Morning gentlemen; quick question please.......

There's a set of N11 mufflers for sale on Ebay today (GM over the counter units) & the seller confirms that the part number is not on one of the mufflers. Is this an issue - or normal ? I currently have a set of GM replacements (probably from early 1980's) on my car, and the GM part numbers are visible on both mufflers. I was thinking of replacing my units with the GARDNER exhaust N11 units; eventually. Has anyone installed these ? Any comments on sound versus OEM ? Thank you in advance.

[Steve B.]

Re: N11 off-road muffler-pipe set for sale.......

Morning gentlemen; quick question please.......

There's a set of N11 mufflers for sale on Ebay today (GM over the counter units) & the seller confirms that the part number is not on one of the mufflers. Is this an issue - or normal ? I currently have a set of GM replacements (probably from early 1980's) on my car, and the GM part numbers are visible on both mufflers. I was thinking of replacing my units with the GARDNER exhaust N11 units; eventually. Has anyone installed these ? Any comments on sound versus OEM ? Thank you in advance.

David, do they have other numbers on the muffler? If so then its an older service part. OEM mufflers had no numbers at all, just a W or an A was present.

[Harry S.]

Re: N11 off-road muffler-pipe set for sale.......

Morning gentlemen; quick question please.......

There's a set of N11 mufflers for sale on Ebay today (GM over the counter units) & the seller confirms that the part number is not on one of the mufflers. Is this an issue - or normal ? I currently have a set of GM replacements (probably from early 1980's) on my car, and the GM part numbers are visible on both mufflers. I was thinking of replacing my units with the GARDNER exhaust N11 units; eventually. Has anyone installed these ? Any comments on sound versus OEM ? Thank you in advance.

Last fall I put a set of Gardner's N11's on my 300hp 63. It sounds great, you will like it. All you need to do is install them then weld the mufflers to the rear pipes.

[Joe L.]

Re: N11 off-road muffler-pipe set for sale.......

Morning gentlemen; quick question please.......

There's a set of N11 mufflers for sale on Ebay today (GM over the counter units) & the seller confirms that the part number is not on one of the mufflers. Is this an issue - or normal ? I currently have a set of GM replacements (probably from early 1980's) on my car, and the GM part numbers are visible on both mufflers. I was thinking of replacing my units with the GARDNER exhaust N11 units; eventually. Has anyone installed these ? Any comments on sound versus OEM ? Thank you in advance.

David------

Yes, they are original GM. There MAY be some slight difference as far as marking compared to the PRODUCTION system but the assemblies are identical and will sound exactly as-original.

That being said, anyone that would pay the asked-for price, and especially the "Buy It Now" price of $9,500, is NUTS.