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3861's almost identical to a 3705 though.





Yep, and it's the "norm" for a 64 Race Hemi to have them (although I'm fairly certain the fuel filters should have red ink stamps not blue). That intake manifold is wild with such an early date, I can only surmise that it's a VERY early experimental piece or possibley a casting error with the year being wrong (which is not all that rare, I've seen that on other manifolds).