
This is a scan from the Squadron book U.S. Self=Propelled Guns in action. ISBN 0-89747-403-1.
I'm asking because I'm building the Academy kit as this vehicle. The kits comes with the 3 bar, T49?, type tracks. I'm not sure they would be appropriate for a mid to late war U.S vehicle. I was thinking of using the T-48 style, rubber with the chevron, from a spare Tamiya Sherman I have. They fit, I'm just not sure they're the one used in the photo.
Also any idea about the center section of the above photo? My semi-educated guess is that since this is the area of the engine the heat from it may have prevented mud from gathering in that spot. I don't think it's any kind of camo, but I could be wrong.