Is there a break in period for 03 or 04 Cobras?

The Mustang Owner's Manual just says not to keep the engine at a constant speed for too long at a time, but other than that you're good to go..\
BTW, the SVT owner's manual doesn't address break in...
 
I left black marks on the pavement at the first stop light from the dealership :D

Then ive taken it fairly easy since then, only gassing it a few times...once I hit 1000 miles or so, i'll have the oil changed and put the new mods on :p