What sized nut

[tradde]

fit the stock Mustang 2v exhaust manifold on the passenger side? I put on an
SLP x-pipe last year and I noticed many months later an exhaust leak. Turns
out one of the nuts is missing. It's a bear getting up there to see anything
so I was hoping someone could tell me what size to use. Yeah, seems like
a stupid thing to happen. I can probably take off the other one, but knowing
how much fun it was to put it on I'd rather just replace the one. Thanks for
any help. The other one is still nice and snug so I am not sure why the other
came off.
Tim R

 

[Nightstick]

fit the stock Mustang 2v exhaust manifold on the passenger side? I put on an
SLP x-pipe last year and I noticed many months later an exhaust leak. Turns
out one of the nuts is missing. It's a bear getting up there to see anything
so I was hoping someone could tell me what size to use. Yeah, seems like
a stupid thing to happen. I can probably take off the other one, but knowing
how much fun it was to put it on I'd rather just replace the one. Thanks for
any help. The other one is still nice and snug so I am not sure why the other
came off.
Tim R

Best I can remember that nut takes a 15mm socket, can't remember the actual size..

 

[tradde]

Best I can remember that nut takes a 15mm socket, can't remember the actual size..

That's the part I remember too.