I've re-scaled the drawing to 1/72. I have top, bottom, front, left side, right side and cross section in one jpeg. File size 1.39MB. I have an old PC but all seems to run OK on the above numbers.
I'll cut up my old 1/48 scale version into exterior parts when it come to getting detail like air vents etc. When they're built in meta I'll scale them down and add them to the 1/72 scale body.
This should meet the desire for detail without the need to design a 1/1 model in paper.sign1
Cheers JTF