Oh yes! ke20/30/55/70 i'm pretty sure bolt up and then you can use datsun 1200/120y/sunny or gemini, they all have hoses on the same sides as for the k motor, might have to drill a couple of holes (in the radiator not the body) alot of radiators allow some room to drill new ones. also check hoses, might have to get some different hoses or something, for example i have a triple core nissan fj20 radiator that has all the hoses on the correct sides, probably a bit of an overkill so its collecting dust at the moment but nearly anything can be adapted to fit!
just go for a trip to your local wreckers with your old radiator and try otherones against it.
cheers sean
and happy hunting