I don't know of the logistics needed, but you couldn't do better than to have Nick Poll create one for you.
He is the best in the world at Messerschmitt interiors, and has his own TG that could be used for mock up.
However he is a Brit that has moved to the South of France, and I do not know the level of standardization of your TG's dimensions or snap button placements, so you would best be advised to contact him directly about the situation.
You can try sending him a personal message from the list of forum members, or might get hold of him more quickly by directly emailing him at brufsup@aol.com