I have a 74 914 with no brake booster equipped. I saw an ad of a brake booster for 914 at overnightautoparts.com, there may be others. Does anyone have experience installing/using one of those boosters?
Thank you
There is NO (power) brake booster (factory or aftermarket kit) available for any year 914; never has been, never will be. And even if there were, there just ain't no place for it.
I found no brake booster on the site you mentioned, so you'll have to provide the link you found. In all fairness, it's just not needed for a car this light.