Here are a couple of additions I have done to my 26K mile 85 Executive. The exhaust is 2 2.5"'s from the stock front turbo pipe straigt back to a factory 745 muffler that has had the inlets and outlets opened up to 2.5". The factory muffler is actually a straight through design non chambered muffler that is close to 2.5 on the inside even though it has 2" inlets outlets. The sound is quite nice, pretty quiet and deep with a factory note. It is a "quality" sound that is not boy-racerish and the performance of cat and resonator removal with the larger pipes are quite a bit and will be more than enough for 1 bar of turbo pressure. The other pics are of my headlight wiper/washer system that added to the car as this was an option my executive did not have. I got the entire system from a member here in dallas (Don) from his parts car and they went in quite nice as the car were built with them from day 1 with all plug ins.