4A-GE MK1 Engine Mk1 Exhaust System

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I have this exhaust manifold, down pipe and SuperSprint muffler (sans cover plate) sitting in my garage. Not quite certain what to do with it. Was told it would be loud, but am trying to think whether it is worth saving for the future. It would need a oxygen sensor fitting welded to it. Before I acquired it, it was used briefly on a Mk1a for autocross or road racing. Any thoughts?