That head will interchange with the integral head. It is a very good idea as the integral head is not what you want to use on your project/driver. They are prone to cracking. Besides, headers and intakes are a lot more accessible with the non-integral head. The 194 has the smallest combustion chamber so unless you are building a hi-performance motor and want more compression, I can't see any reason why not to use this 63-66 head. Have a machine shop go thru it (unless you have the facilites to do it yourself) and install it.
