250 SWB blueprint

I am planning to build a 250 SWB body as a fun project in my retirement. I have been teaching myself metal work in the old school way, the way it was done in the late 50s. Does anyone know if there is a book or a source where I can find specific fractory drawings or plans for the SWB. I have found generic plans but nothing that is very good nor from the factory. Do these even exist? Best I found is the following..
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Thanks, I had found those as well. I am beginning to realize that maybe during this era of hand built Ferraris that plans were no more than an initial drawing and a tubing or wooden buck. I just spent two days at the Cavillino classic track day and saw a few SWBs....and noticed that there were subtle differences from one to the next...
My best solution maybe to 1. Find an owner willing to let me do a 3D scan.....highly unlikely....
Or 2. Project real images onto a large white board and do scale size drawings...

 

Wow....thank so for this. I have downloaded the file and it looks great. What I do not know is how representative the dimensions are to the actual factory drawings...if ther is such a thing and yes I know these cars were changing with each new build as they were all basically one offs built by hand.