Oke Im buying the parts to do the rear disc conversion on my 96 ex and im getting the master cylinder does it matter if I just buy this

or if i get the whole thing and why

 

Different MC's have different bolt alignment than others. By buying a booster and MC set, youre eliminating the chance of misalignment.
IE - some are set at a 45* angle from the horizontal
(though neither of the two above are this way)

Plus, depending on the size of the mc you get, a larger booster may be a wiser choice (to help move that amount of fluid).

One last thing...you should get one larger than 7/8

 

Thanks yeah and there are both from an si or for an si civic but im just saying to I need to get the booster with it or it does not matter?

 

If it lines up properly...it doesnt matter all that much, no.
You would be fine just getting the mc

 

Im getting the prop valve too so yeah i still have no idea but im probably going to go with the second one just too be safe.

 

No point, if its from an em1...since all 96-00 have the same booster (9")
If youre getting an integra set, get the booster...

I just noticed...you have an EX - you already have that same MC.

 

Yeah and im getting the Si brake stainless steel breake line are they same in the front on the ex too i think they are.

 

lines up front are the same - rears are different

I edited my last post, if you didnt see... You already have a 7/8 MC (ex = si)

 

so the booster is the same on the 96-00 all models so it doesnt matter? Will the mileage on the car effect the booster cause i have a car that has aliitle more kliks?

 

Correct on the booster...and its probably fine (Ive never heard a booster going bad).
But, like Ive said...you dont need ANYTHING, if youre getting it from an Si......since you already have that same setup.

 

All right thanks