OK, so I finaly figured out why no parts stores carry an intake gasket for a 1973 250 I6, it only to me 3 days to figure it out. I guess I shoulda looked at the motor.:deadhorse Can I remove the head with the exhast manafold still bolted on? It seems to me that it would be easier to work on.
Glad you figured that one out for the intake.LOL You can unbolt the exhaust pipe on the manifold than remove the head.
If you really wanna run an intake gasket, buy a classic inlines Head. It's got a removable intake http://www.classicinlines.com/AlumSpecs.asp
Yeah I made the same mistake when I had my inline 6. I was asking for the wrong part. I too asked for the intake gasket instead of the head gasket.