I know that you may have started your Pershing, but here are a few links of models. I build 1/35 scale WWII tanks and I use these as a reference. Hope this helps.



http://www.missing-lynx.com/gallery/gallery_usa.htm

http://www.track-link.net/gallery/USA_WW_2/subject/3

http://www.ww2modelmaker.com/mg/modelsus.htm