I called the moco and asked them direct. They told me that if you get the street legal kit and have it installed by a harley dealer within 90 days of purchase of the bike it is still covered. Mine is at the shop right now having the 1,000 mi and the 103 kit installed.
The cost of the kit is 1199. I happend to get mine on a 20% off sale. The cost of the labor depends on your shops hourly rate and the amount of time they say they can get it done-about 10 to 12 hours.
I got mine as part of purchase , but had to wait on parts, installed at 900 miles . Under warranty .. happy (Stage II 103/SERT/SE street perf slip-ons)