63 Dart conversion question

Converting the front drums to discs this week. 63 Dart GT. Original single jar MC, so no distribution valve or proportioning valve in the car.

Staying with manual brakes, I have my dual MC installed and ready to do lines. I bought this kit from Inline tube that came with a distribution block. There is no proportioning valve mentioned in the "related products" section, so I'm assuming I don't need one but someone else told me you always need one with a disc/drum set up. Can anyone fill me in on the facts? Here is the inline tube kit.
1963 Dodge Dart GT Dual Master Conversion M/C Lines w/Block 3pc, OE Steel

Thanks
Alan