Do you know the Allied-Axis series from Ampersand publication?
Although I’ve often seen these books in the past at the modelling club, I only had the chance to obtain one (#30) recently, and I must say this is gold for modelers. Pictures are stunning and captions are full of detailed information.
The Sherman dozer is a stunning machine (Company of Heroes anyone?). I am not aware of any kit to build one, but surely there must exist conversions.
For a detailed appraisal of the book, head over to Track-Link.