Leaf to coil

[70stroker]

I am wanting to swap my 70 gmc from leaf springs to coil springs, I know i need the crossmember that the arms attach to, and the arms themselfs. Ill also have to weld on new spring perchs. I have to main questions for you who know the answers.

What about a panhard bar, my gmc doesnt have the attachment point for it on the axle housing.

Is there anything im not thinking of?

thanks in advance