Just received my kit and am almost done with thorough inventory. Definitely the first thing that should be done, the time spent should easily pay off later in the build.
I ordered the MKIV with IRS and will have a 363, T5 and aluminum 3.55 rear. Looking forward to getting started.
The instructions say to pull the body next, but I've seen several references to marking the panels first. It sounds like the ones to mark are the rear trunk lip, trunk side panel tops and bulkhead. I guess everything that is less than 1/4 inch from the body. Just haven't found a post that describes what to mark for the different areas.
Steve