slant six cranks but won't start

Hello Dr. John! For starters, what's the history of your \6? Is it original to the car, is it the first fire after a rebuild or has it been swapped from another vehicle. When was the last time you know of it running? Are you able to get any start at all? I would get a jug to gravity feed the carburetor to the fuel line to start with and proceed from there. What car is this engine in?