Dimensions of Trunk Area - 1966 Mustang

[IHaveAMustang]

I am looking to fabricate out my trunk in my 66' coupe. Anyone know of a place online that has the dimensions? I have been told to use cardboard cutouts, but I figure out of all the guys that have done custom enclosures with MDF, someone had to keep their measurements around.

I've googled and been on VMF, nothing so far.