Hey Freddy...
First let me say that the cab and the car deck are AWESOME..
As for the Drom Box. I think that first the hinges have got to go. Many times these have more of a "T" hinge on them.
HERE is a "T" hinge that would work perfectly. You are looking at hinge #2.. I personally would file the arrow down so that then come to a smooth rounded point but that is up to you. The width is 11/32 and the length is 17/32 so they are perfect size.
Second I think it would look better if it were like the prototype and the drom box being the same height as the cab and the car deck over the drom as well.
The thing looks great. I'm watching this build.
~Mike~