Brake Booster

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2003.5 Mazda Protege5
Alright my girlfriend's car is closing in on 50K miles and I have an obsession with seafoaming engines and I have always done it through the brake booster line including my 2.5L Duratec V6 Cougar that I had before my protege5. My question is where the hell did they relocate the brake booster line to? I cant seem to find it
 
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