I'm the Model Curator and Webmaster for the Australian Vietnam Vets Museum web site at www.vietnamvetsmuseum.org  The museum is heavily committed to the use of models and dioramas in our educational display.  

A pic of the latest model finished for the museum can be seen above.  It is a 1/6     scratchbuilt M113 and the web site has three pages of pics showing how it was built

John