OCC has published a review on the GMC R-4 Bulldozer
This case is not for any one who considers themselves to be of the enthusiast level. I'd like to recommend this case to budget users, but cheaper and better cases can also be found. The lack of HDD and ODD bays will stop many mid-range users from purchasing this case. This puts the Bulldozer in a relatively awkward position. In the end, I'm not really sure if I can recommend it to anyone. If you're throwing together a secondary computer out of spare parts and want an inexpensive case that looks cool, then you might want to consider the Bulldozer.GMC R-4 Bulldozer Review