Howdy Dave, your Dragon kit 3536 will have all the stencils/warnings and tactical markings/barrel names for a couple of 3/67 AR, 4th ID Hogs. The Echelon set 356023 just gives you more options to change barrel names and bumper numbers(as advertised). Echelon set 35017 1/67&3/67 AR 4th ID
(
http://pachome1.pacific.net.sg/~kriegsketten/T35017.htm )
gives you another bunch of complete markings for eight tanks plus the stencils/warnings. The 4th ID did not participate in the initial invasion of Iraq in March 2003. They were HET'ed up to Al Diwaniyah in late April. And as John points out by 2004 most every tank was sporting the BRE (Bustle Rack Extension). Just keep in mind it is only bolted on and could be easily removed for maintenance, damage or theft. As always your best bet is to find a picture of a particular vehicle and use it as the basis for yours. And I would not worry too much about your knowledge of the US Army M1 marking system, most Soldiers I know are also ignorant of it. I am glad that I am apparently not the only loser on the Internet this Memorial holiday weekend, thank you Dave and John!!! Outta here, Mike sends . . .