It's not a new concept. Already sites out there selling retrofit kits, just plop them into your fixture. Gonna be a challenging business.
http://www.rapidled.com/servlet/the-DIY-Retrofit-Kits/s/10/Categories
And these guys too provide everything you need, at low costs
http://ledsupply.com/
http://www.rapidled.com/servlet/the-DIY-Retrofit-Kits/s/10/Categories
And these guys too provide everything you need, at low costs
http://ledsupply.com/