The unit in my gsl-se is clearly bad and I'd like to swap in the booster from my 12a which is down for mods. The se is an 84, the gsl an 85. I couldn't locate the answer through searching. Thanks in advance!

 

i pretty sure theyre different cuz i picked one up from a gsl a few years ago to put on my gslse but it didnt work. the hole lineup is different

 

check mazdatrix.com it should tell you if they would interchange

 

foxed.ca has the parts catalog, section 4300... off the top it should work

 

The gs booster is smaller than the se. It should work but the pedal effort may be different. I went from a gs booster to the se and had to move the clutch master cyl. over but since your doing just the opposite it should be fine.

 

He stated he has a "GSL", not a "GS", but it does not matter as all 84-85 models are interchangeable.

 

Thanks for the assistance fellas!