I overlooked the tilt cab portion earlier and my recommendation of the aeromax would not work very well, its more of an f series starter than c series.
For the c series its alot more bull nosed so a midnight pumpkin body would work, it could still take some modding because through the years of the c series their were quite some changes from round nosed to flat nosed so I'd really narrow your choice down to a specific one and research it thoroughly and get a lot of pics. Then get your styrene and possibly a cab to start the build.
If you get in touch with Bullitt, he did a custom COE build and may have some good insight for you heres his build
http://www.scale4x4rc.org/forums/showthread.php?t=20801
or this one
http://www.rctruckandconstruction.co...read.php?t=268
--Dan