I'm selling all my ford stuff and going back datsun

..i'm buyin a 1200 so jus need a littel info please.
1) from leaf spring to leaf spring,whats the distance??
2) Got an engine from a Vanette today.What could it be???(the markings seem to be missing)
3) Are the vanette(short) boxes any good??
4)How far out will a vanette rear end be on a 1200 datsun.
thanks for the help.