I have touched on this a little a while back. I ordered an aftermarket KOYO radiator for an SR swap into an S13. The hoses are in the right spot for the L28ET swap. Well it didn't workout because of how close the engine is to the radiator, the upper hose was resting against the turbo distributor cap. I pulled the SR radiator and replaced it with a new KA aftermarket radiator which put the upper hose on the other side, this worked much better for my L28ET powered S13.
I took the aftermarket SR radiator and fit it into my S30. It will fit perfectly, mounts just need to be made. It honestly looks like the stock S13, S14, Maxima or even a bunch of other upper radiator mounts could be retro fitted to make this setup work, I'm not sure about the lowers but i do know I could make something work.
HHUUMMM, I still have my S30 and I still have the SR radiator, I might have to look into a installation so that i can mockup some brackets for possible production.
pallnet