The difference between the 350 and the 400 would be very small in scale. After all the shake will cover up a large part of the viewing area. So you must be or are going to be doing the Snowman's truck. BTW I think the gun is a little over kill to get rid of Sheriff Buford T Justice. You need to watch the movie to see if it was a stick or an automatic car. I can not remember.
I had an idea to do a Rambler as a ute ( Ranchero, El Camino ) style car. I pick one up the same week as the NNL Nationals, put it in the stash and when I get to the NNL there are two done on the tables. LOL About 2 or 3 years before that Somebody had a nice Convertible Black Force at the NNL Nationals.
You can go swap meets and deal in person that is a better place for the higher cost models normally. Try going to estate sales and get there early look on line for pictures . I picked up a 69 impala that way. The guy that was there early only took kits with a box. His loss my gain.
That extra body line is just a chrome trim piece . http://www.bing.com/images/search?q=stock+40+willys+pickup&view=detailv2&id=E0AC5D93888D6ED7C2F8F88404C6871E1F86F094&selectedindex=11&ccid=cKD9daGI&simid=607999539630245279&thid=JN.zMUoivR2qXs4%2F2anr1Iceg&mode=overlay&first=1