Stock TTA Catalytic Converter same as Grand National?

[ROBERTDMERRILL]

Hi,

I am looking for a stock AC "made in America" stock catalytic converter for my TTA. I have been over to the Grand National parts wanted and have a few leads.
My question is are they the same? I still have my stock bolted up with the special adopter "flang" thing. Can I use that with a stock Grand National Cat. or do I need a TTA (F-body) cat.

Thanks,

Rob

 

[TC Turbo]

I have a TTA cat I was planning on selling soon along with the rest of my cache of parts. Visually it looks like a Buick cat to me but there could be differences that the wiser folks here can advise of. If you're interested PM me.