While I am in the middle of my "6.2L into a YJ" situation, I am going over my vacuum issue. I plan on leaving my brake system intact and using a vacuum pump. I found on from Stainless Steel Brakes that is specifically used for this. Has anyone else done this or used a different method? I am not even remotely interested in changing an entire brake system if I need something as simple as a vacuum pump to solve my situation.