I have a straight Series one shell that I want get back on the road for my use, not to sell. I couldn't find any threads although I'm sure they exist on swapping parts. I have many 1973 parts, doors hood, hatch, dash and wiring that I wonder if they will fit on an early chassis. I don't want to do any cutting  or adding welded tabs to make things fit. Does anyone know if the things I have listed will work? I'm guessing later door hinges to handle the extra weight. I will get an early brake booster. It will be a dual purpose track day and street car so I'm not worried about the interior.

 If I were doing it, wiring would be the major hurdle. For example, compare the wiring diagrams for a 1970 vs a 1973.  

I think all of the hard parts should be a plug and play. Datsun did change the half-shaft angles in the very early 240s. What is the build date of your shell?

Drivetrain and suspension will all be swapped in from my autocross car.   Do you know if a 73 dash will bolt up to a series one shell? That and the doors are my main concern. I was just wondering if anyone has tried it.

All 240 dashes bolt up in the same way at all all attachment points.  Swap away. 

Fantastic, thanks zKars.