Just picked up a 1990 Civic Si hatchback, 5spd/d16a6. I need to know what size master cylinder and booster these have, and what prop valve these have.

I already plan to do the rear-disc conversion using parts from a non-abs DA. I may have access to a prop valve and booster from both abs and non-abs DAs. Just don't know what I should upgrade, or what I can mix-and-match. The mc on this civic is shot, which brought me to this point. Figured now would be a good time to consider upgrading stuff if possible.

 

i believe they have 20/40 prop valves.. id use non abs parts. a 15/16 mc and 40/40 prop valve from the da. also the bigger mc isnt really nessacary unless you upgrade to bigger front brakes such as ones from the teg. i just swapped prop valves on my 90 dx hatch. i have rear discs from a 99 teg.