I believe that most of the dual diaphram boosters will be close to the same depth. they are much deeper than a single diaphram booster. When you make a choice based on appearance versus suitability, you will usually be disappointed in it's function.
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Originally Posted by 60apache
thanks. aside from going to the parts store and measuring every one, does anyone know what the thinnest (closest to firewall) dual diaphram booster that will work with this bracket is?
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