cheapest way to make a 2 stroke bike street legal in california?

i have looked up in google to search for making a 2 stroke bike street legal in california and have gotten many different answers. what i came accross is that most people say that the VIN is pretty much the most important part in registering any dirt bike for street use. but on dmv's link below, i did not see anything mentioning VIN in the eligibility for on-highway registration -

http://www.dmv.ca.gov/pubs%2Fbrochures/howto/htvr1...

also, i researched the special constructed ohv

but, it seems that doing it like that would cost the most and im not trying to do that anyways. for registering a dirt bike as a on-highway vehicle, does it have to also have the VIN number part included after 1978, or does it just have to be certified by the manufacturer as street legal?

other than that, i thought it would be just easier to ask if anyone knows a list of street 2 stroke legal bikes that came from the factory / manufacturer as street legal or capable of being street legal.

i called the local dmv and i didnt really get any more information that i read from online, the person i spoke with said that as long as the vin number does NOT have a 3 or C in the eight character of the VIN number AND has the emissions label, then it can be made street legal, assuming i have all the other equipment, lights, turn signals, horn, etc. the only problem is, i have not really got any clear information on the emissions label / sticker part.

do all bike manufacturers have them on their bikes from the factory? and if so, what does the label specify, does it mention off road only, and if it doesnt say off road only, then that makes it eligible to be made street legal or a dual registration vehicle if the VIN number also does not have a c or 3 in the eight character? the person did tell me that if its missing the emissions label, then it cannot be registered, even if the VIN number is good.

another thing i asked the person was if there any other laws or limitations that prevent registering the bike, like if the bike is newer than 2003, it cant be registered, and she said no, its pretty much the VIN number, emissions label, and appropriate equipment.