(PS: I started with the thingiverse openscad model and tweaked it in Sketchup. Added detail to a few parts. I thought I was happy, but just realized the tank hatches aren't as rounded/tall as the photos. Also trying to reconcile differences with Frank's plans).
I build in Lego! Blogs at:
http://L3-G0.blogspot.com (or http://L3-G0.com for short)
http://MCK-Y.blogspot.com and
http://BB-8.blogspot.com
http://L3-G0.blogspot.com (or http://L3-G0.com for short)
http://MCK-Y.blogspot.com and
http://BB-8.blogspot.com