Have my '88 Shadow ES apart as I set it up for drag week. Noticed that it looks like the master cylinder has been leaking for quite sometime from where the MC mates to the booster. Likely going to replace both while the car is apart.
Looking at RockAuto, it appears that there are multiple booster options. Single diaphragm, dual diaphragm, different ones listed for auto vs manual, etc. The car has had 11" brakes all around since '04 but I'm nearly positive that it is the original brake booster to the car.
Suggestions or recommendations welcome. Thanks!
Pat