Ok I placed my order last week, so i have been on here more. I have a question on the engine upgrades the stage 1 , 2 and 3. Can you order those new on your build, or is it a dealer add on after you get it. i might go ahead and do stage 2 if i can get it done during the build process. and just cut out the white leather i was going to go with, to help off set the added cost. and has anyone done the stage 2 upgrade and is it worth the cost.