I did mine a couple years ago but I think I captured everything.
baja design kit
additional pressure switch for front brake
chain guard (mechanic may not care about this but, if you get pulled over I'm not sure the police will be so forgiving)
Save all receipts
Put all of these items on the Bike.
Complete your sections of the mv-426 form and include taxes that you didn't pay on parts. (I was told they can be picky if the writing is not legible so you may want to type it out on-line)
Take your bike, the MV-426 form, pictures of motorcycle, and insurance to a motorcycle mechanic to have inspected. Mechanic should complete the mechanic's section of the form, sign the pictures, and put inspection sticker in form.
Then take the mv-426 form, all receipts, bill of sale, Certificate of Origin, and insurance to an Auto Tag center and they will help you with the process. They will also fill out a mv-1 form to change the body type from 'for off-road only' on your Certificate of Origin to a MC.
Once the DMV process your application they will send you a title for a modified vehicle. Once you have that back you can go back to auto tag shop and get plate. You'll also have to get the bike re-inspected.
Once I submitted the paperwork it took about 6 weeks to get my new title.