Do you know if these headers would fit my 1958 Ford Custom 300???????

58 Ford Custom 300 - San Pedro, CA (So-Cal)

Those look like early Hedman for T-Bird.  They will not bolt on with the outlets pointed downward, the front suspension is in the way.  They might bolt on upside down and a fenderwell exit type outlet pipe used.  That would require cutting holes in the inner fenders, then routing the pipes to the mufflers will be another headache. 

John - "The Hoosier Hurricane"

Those look a lot like the Hedmans I had in the late 60's, and pretty much like the Red's I have on the 'bird now. They are not proper Tri-Y's, as the tubes don't match the firing order (one side should "cross over"). Then and not long ago, that was all we could get. Much better headers are available now.

miker
55 bird, 32 cabrio F code
Kent, WA
Tucson, AZ