Hey there, i was thinking of installing the Roadster seats in my datsun 510. I wanted to ask a few question. Did they ever come from the factor in white? if so what year and make if you can tell me? If i were to install any roadster seats, would anybody have any prefrence to one versions of the roadster seat to any other? One last question. If somone could provide me a measurement on the seat brackets as to how far apart the holes are front to back on each track and also tell me how far apart the tracks are from each other, this would be a great help. I know that this might be asking alot, but thank you for your time.