I'm doing another disc brake conversion and this time I want to use an adjustable valve for metering the pressure on the rear brakes. Where is the appropriate place to install it? Between the master cylinder and the block on the frame rail or behind the block on the frame rail? or does it even matter as long as it goes on the rear brake line?
Pictures would help, thanks.


1968 Coronet
1968 Charger
1966 A100 Pickup
1967 Barracuda
1970 Challenger
1972 Challenger
1973 Barracuda
2021 Ram 2500