Who like a Mystery?

[Tim Lovelock]

Hi folks, thanks for taking a look at the following to answer my questions.
I have what I presume to be a C-60L with some modifications.
The chassis measures at 213", taken from behind the bumper to end of chassis. 10" for tow pintle etc. would make it 223" I'm guessing.
The wheelbase however is 110"! 24"short, but when we looked for the positions of possible spring hanger mounts they don't correspond with the mounts currently on the vehicle (which have been bolted on as opposed to rivet).
So I'm suspecting there was a different spring mount set up originally to what I have now.
The tail shaft tube length is 30" (tube only).
On what I am hoping is a positive thing to help identify this vehicle is an engine number PR3946427
I also have a number stamped into the cab mount bracket. Is this the chassis number? 5808707(8)(-) the last two digits were very hard to decipher I'm hoping the pictures will assist?
My friend who came out and helped me today is a mechanic attempted to start the girl, felt it unusual to have a 'chassis' number on a bracket. If this is the case if you could give me a location to look I'd be grateful.
In term of starting her, not today, starter motor runs but wont engage. Motor turns by hand but according to Steve it didn't feel like it had much compression.
If anyone can enlighten us, we would appreciate your thoughts.
Accompanying photo's Serial number. Rear left springs and mounts. Just a note on one pic you can see, where it appears a spring hanger, may have attached originally but a different configuration to what is there.
Cheers Tim