Most Dragon models today are a collection of old sprues and new sprues added to create a new kit variant. In this case, Dragon has done so and in this case, redid the areas that had zimmerit applied. This being said, you have many options that need to be reviewed and decided on before you start this kit.
Steps 1, 2, & 3 - Lower Hull
As with most armor kits, the first step is the running gear. Remember those choices I mentioned in the paragraph above, well, here is the first one. You have a choice of two slightly different drive sprockets. The second choice is between the end caps over the bogie springs, and the third is the choice of mufflers.
The instructions give you two sets of muffler and you will need to drill out some locating holes depending on which muffler type you have chosen.