Running it in (don't say breaking.......
) on the track is the BEST thing you can do for it. You have the freedom to drive it as needed- varying acceleration and deceleration. Doing it on the street would be a pain with speed limits and traffic obstructions.
Ideally you could go out with a DE group for the first time and you can just fiddle around getting on and off the gas as you wish, watching the gauges (and listening for noises that freak you out......
) and pointing people by.
The one thing that puzzled me at first was the recommendation for cam break in. I thought it was idling at a minimum of 2000 rpm for 20 min. The general rule is to
not let the idle drop
below 2000 rpm for the first 20 min. So that means driving it hard is certainly acceptable. Just don't let it idle too slowly, in order to ensure adequate lubrication to the cams & rockers.
Funny thing is, there's other stuff like clutch run-in that's bugged me. If you're breaking in the engine and a new clutch (replaced it while you were in there, as does everybody, right?) at the same time, the clutch is truly supposed to be babied for the first 500 miles. You normally want to avoid heavy throttle application to allow bedding the clutch disc with the pressure plate and flywheel surfaces. THAT's not easy to do on the track.