IML: Exhaust manifold for 331

[YBSHORE@xxxxxxx]

Imperialists,

 

    I am replacing the exhaust manifolds on my 331 and purchased a used set that I was assured would fit.  Now, I do not doubt I could MAKE these fit with some fancy pipework, but they are not the originals I had anticipated.  I trolled to the best of my ability with the following casting numbers which are on both sides:  1674661.  Can anyone help/direct me to what the REAL application for these are?

 

Thanks in Advance,

 

ybshore/Jack