Yeah, so I just bought a new MC which is 25mm. Will this swap right out with my old MC, or will I have to do a bunch of mods. My car is an E30 325is. The guy who sent me it said its a direct bolt-on. I've read that the E30 M3 has to have a brake line altered, but other than that its easy. Will I have to alter this brake line as well? Anybody know?