I dont think you could cut the spring mounts off the left side because they are machined rite into the differential housing.Plus if you turned the axel without pulling the tubes out of the housing and rotating them back to normal position you cant get the front tires to align properly.I would go to High Angle drivelines web site and see what they have to offer.[ But it wont be cheep.]
77 swb 468 4l80e np205 d60f 14bolt rear
71 blazer 383 th350 np205 d44hd front d60 rear