I have a E9 with the same engine 3weber Sounds great but I have another E9 with M3 E46 engine sounds crazy when I drive that car I can not drive slow it makes me push the throttle any chance I get it is over 350 HP, and I have Wilwood big brake system on it, I had to call around and buy a full cover insurance it is not every insurance company insure classic car but I have 150K insure, but I am going to sale this cars, I have another Inka orange that I am working on it, I love the color, I learn a lot on this 2 car, and I will restore the 3rd one properly, it took me long time to finish this two car But on the 3rd one will be quick.