To make your current distribution block work with front disk you can install an in-line proportioning valve in the line that goes to your rear brakes, such as this one:
https://www.summitracing.com/parts/ssb-a0707-1/overview/
Or better yet you can replace the stock distribution block with an adjustable-rear one such as this:
https://www.summitracing.com/parts/ssb-a0730/overview/
