I hear ya on these Fujimi kits!

I built the Mercedes 190e also but it had the decals promoting the 2000 Olympic games for Berlin and that kit was the same with a standard car seat etc.
I'm also a big DTM fan with a couple of Opel Calibra's(UT Models which are out of production now) waiting in the works...can't wait to get started on them.
I look forward to seeing the end result from this kit and also your Promarkt-Zakspeed kit.