Roadster's use SAE 3/8" x 24 tpi brake lines.
510 use's METRIC fittings, and the hoses have a different
end on them anyway. ;-)
Best bet is to order THREE new hoses (two up front, one in
the rear) from your friendly Datsun Roadster parts supplier.
You'll get the correct item, and have good brakes!
>I have an old NAPA parts book. There is no listing for brake hoses for a
>There are listings for the 510s. Will they work??? Or what should I be