cast-iron welding ?

[dmsfrr]

I'm taking a vote.... How reliable is this repair?

It's a driver side '57 T-Bird (only) exhaust manifold, the lower tab at the rear of cyl. #8 broke off, was built back up and smoothed. The missing piece was fully outside the exhaust passage.
If I use it, it's my intention to mount it to the head with a large washer under the bolt head and without a gasket, as original.
.