After some work, now we can see the chevi frame at all.
There isn't any good screw/nut belong the chassis yet the most important ones refered to the structure seems Ok.
I have removed the windshield, doors and after this I took out the cab.
Is strange but I ignored how many wood are in this kind of car and can't be used anymore because is in a really bad condition, so my deal is to build a new cab using the metal parts avalaible and a new ones.
Furthermore I've headache with the suspension parts.. because I'm not sure what to do, but maybe will be better to focus my effort in the next step and we'll see in the moment.
The next step will be to remove the old engine and gearbox.