VNT Exhaust manifold question

[PimpinLebaron]

A while back I bought a 'new' VNT exhaust manifold off Ebay, is supposed to be for the '89 VNT. The casting numbers on it are different than my old VNT one & another spare VNT motor that I have. Wondering if it's really for the '89 VNT. They look the same, they seem to fit the same, only the exhaust studs/nuts package I got from FWD, the nuts don't quite fit on the manifold due to the gap difference where the nuts fit on, but they fit fine on the old ones.

Both my old manifolds have cast numbers of E4343482

New one is stamped 4483934, also has a big 'N' on the casting as well.

Any ideas?

[87dtna]

The only difference VNT's had was a high nickel content in the manifold to take the heat better. The big N should signify that it does have high nickel content. The outside appearance and how everything bolts on should be exactly the same as every other 8V manifold.