Yes. Can't say about rpm there are variables. This is a viable option, but need to know what engine. The engine must be a 1968 or newer slant six or V-8 (or crank must be 68 or newer). Other than that it is a "drop-in".
Is the pilot for the 68 or newer larger or smaller in the crank? I will search it but is there a thread on this that you can point me to? Sorry to anyone if this is hijacking this thread.