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If you want to convert a 510 to right drive, then i wish you well, but i am still trying to figure why. [you forgot to mention that] If you were to seek out an original right drive car, then i can see that as being a truly worthwhile persuit as it would be the genuine article & it would have some real value, but to convert a left drive car, well, it's your car, & again, i wish you well.

As others have writen, you may well have more success with some of the 510 dedicated sites. Most of us here have the smaller siblings of the Px10 series of Datsuns.