The launch & brakes are indeed the original TTD track. As for the Zamperla doing new launch track, that's not the craziest concept. They're capable of it, but reusing the old track was the way to go.
As for the install,
Adena Corp are the ones unloading shipments, I assume they'll do the rest. They built Maverick back in the day (and still have the old heartline roll at their place in Ohio) & plenty more rides.
More track (with retractable brakes & drive tires) being installed at the end of the brake run, as of about an hour ago:
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