Is the 1976 fuel injected? The guy i am buying it from does not know
A '76 model should be fuel injected. USDM cars were EFI from '75 on, and I'd think the JDM cars would be as well.
Also is it the same from the front seats forward as a standard 2 seat s30?
Yes, Longer wheelbase, extra seats, and the odd roof are the only difference.
Also any idea what a car like this might be worth?
I'd love to have one here because they are so unloved (unloved = cheap) and I could easily swap all the bits over to a 2-seater shell.
No market for it, plus none ever seem to come up for sale, means the "market value" is tough to determine.
I would assess market value as what the parts on it are worth. To buy all the correct bits to convert a USDM car to JDM-spec would easily be $1000+, so if you can get it for less than that I'd jump on it...