LTO sa east ave would be the best....declare it na lost OR/CR and the one who should be selling to you should be the "real owner" as per CR kasi they won't consider if the deed of sale was not the declared owner as per CR file nila.
Goodluck, a 67 beetle is a good one....if you could get all the orig parts...else....scrap the idea kasi sayang ang time and effort kung half bake ang gagawin mong restoration (Just my opinion).