The heads are essentialy the same and take the same light chambers. How the heads mount to the chasis may be different.Omega C-700 and C-760 are different machines and use different negative carriers. Most parts do not interchange. You will have to find model specific parts and accessories for the 760. The only parts that are common are basically just lenses.
The C700 is still sold by Omega and the head it takes is a C760.