Yes, you can. I used a 68 Nova 3 core in my V8 swap by setting the lower mount down 2" and back enough maintain the same angle the stock rad sits at. I welded up some offset spacers to do this. I widened the stock upper mount slightly and opened up the opening for the cap a bit. The rest was plug and play.
Sorry, no pics. I went back to the stock V6 rad when I changed over to the DOHC motor.
1986 SE Aero coupe.
3.4 DOHC swap is complete and running, now just have to finish the rest of the car...