Frank from Delaware New to this site

I just bought a 1948 Plymouth Business Special Deluxe Coupe “P11” for a restoration project.
Question: Is there a place where I can find information about this car? This model only has a front seat? What’s the difference between the "P" models?
Thanks, Frank from Delaware

 

I just bought a 1948 Plymouth Business Special Deluxe Coupe “P11” for a restoration project.
Question: Is there a place where I can find information about this car? This model only has a front seat? What’s the difference between the "P" models?
Thanks, Frank from Delaware