Testarossa Catalytic Converter 121385: where to find?

Hello,
turns out one of my catalytic converters is a bit closed. Not too much, I can still drive. But my shop thought it would be good to be on the lookout for one to change it when the next big engine-out service comes along.

Do you know of any good sources where I can find a good used one?
I already checked google and contacted Red Bay in Belgium and Koenig Specials. Neither has one. And aside from that I am only finding new ones.

Hope someone can help me out.
Best, alex

 

@Capt. Rich Thank you for the offer. Do you have a parts number? I think the cats are different between the TR and 512TR, but let's see.

@ferralc Thank you for the link. Where did you see the ad for both cats? Here on the forum? The only one I found was already sold unfortunately. The price was good, USD 400 for two cats.

@Veedub00 Unfortunately, yes I need the cats in Switzerland. Would love to get rid of them. But I think best is to just change them. I saw on an old invoice of the previous owner that they put in two used cats back in 2020. It was done by an official Ferrari shop here in Switzerland. So I don't know if the one partially closed cat was always like that or if it got that way

 

@Capt. Rich Thank you for the offer. It seems like they are different from the TR ones. So, I won't be able to use the 512TR one, unfortunately

 

To give everybody an update here, too
In the meantime I was able to source two catalytic converters. Thank you @bernieb.

And for others to make the search easier:
On 87 TRs the Ferrari parts number is 121385 (121 385). It also says Zeuna Augsburg ZS428 (or ZS 428).
It seems they are identical with the ones on the 512TR. They carry the Ferrari parts number 8149304 (or 8149 304). It also says Zeuna Augsburg 223669901 (or 223 6699 01 or 223 6699 J 01 or 2236699J01).

I hope that it might help someone someday

 

@Rifledriver are you sure the 512TR ones don't fit on the Testarossa? I could swear they look identical and have the same mountings.

@bernieb Can you bring light into the dark? Were the two ones both mounted on your Testarossa?

 

OK, let me rephrase: What is the difference between the cat on the Testarossa and the 512TR?
And: Can you drive the 512TR cat on the TR? And potentially vice versa?

 

And here are two photos comparing the Testarossa cat and the 512TR cat. They seem identical on one side and a little different on the other side.
What would happen if you were driving a 512TR cat on a Testarossa?

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