I am about to fit my new Mongoose exhaust. A couple of questions:

1. Are there any gaskets behind the turbo (or anywhere else) that should be replaced; and

2. The exhaust is supplied in sections. Is sealant used in the joints of the sections which are to be held by the U clamps? If so what sealant is best. I am thinking of Permatex® Ultra Copper® Maximum Temperature RTV Silicone Gasket Maker.

Thanks