You could probably bolt in the entire front crossmember & suspension from a 1 ton onto a 1/2 ton frame..that would be the fastest & easiest way..
It has been years since I looked up parts for 2wd trucks ,but I believe the ball joints have larger outer diameter,different taper and the knuckles are different than a 1/2 ton..so while you could swap A frames and knuckles its almost as much work as rolling a whole front crossmember under the truck..