Exhausted

A big box came today, from Mobley's Bultaco.  I immediately knew what it was.  The exhaust is here.

So - I opened it up, and here's what it had:

Wow.  So - it's in 2 pieces - with two loose metal tabs.  I figured that the tabs were to be welded onto the exhaust, so that you could mount it to the frame.  The header has some springs and two washers on it.  Apparently, it's an expansion joint.  The two washers welded to it connect to more springs, which attach to the exhaust nut on the head.  

This will probably be the last item installed on the bike, but it looks pretty neat.  Way better than the stock exhaust.