Rare 760 factory pipe help

Anyone ever had any experience with this exhaust that was made for the blaster 2 and Gp760? I have it installed, just waiting on a head gasket in the mail to test.. I followed factory pipes installation instructions but have heard mixed reviews about this pipe, any tips or info would be much appreciated. Thanks in advance
 
i have several of them. the stainless mounting brackets crack easy if you do any surf riding. look around for a heavy duty set, i made them and may have one laying around. Keep in mind with a stock boat you will not get a lot extra top speed but a little bottom snap. Riva made 64x cdi which helps it a little more. a good read on the B2 was done by groupK and recommend reading it before you mess with the B2. my experience leave compression alone.
 
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