No, there won't be a pressure or volume change, as long as the line is fully purged of air during the bleeding process. However, changing the original design will get you into a gray area with the US Department of Transportation, which sets requirements for safety of operation items like steering, tires, and brakes. In case of an accident, your insurance company might have an excuse not to pay a claim if you're running non-DOT-approved brake parts. I spend a lot of time doing warranty claim inspections, and it's surprising how nit-picking insurance companies and warranty providers can get. Try running into a school bus full of kids and being on the receiving end of millions of dollars worth of lawsuits, and watch how quickly your insuror turns into a weasel! Don't give 'em a loophole to jump out of!
Jerry
