out of commission, cant drive my dart anymore

DRUM brake ball joints attach to the spindle with 1/2" bolts.
DISC brake ball joints attach to the spindle with 9/16" bolts.
A DRUM brake ball joint can be drilled out to 9/16, and then be used on a disc brake set up.
Easy, peasy.

Thats it! Thats what it was i read! I remember those sizes now that you said this..The thing im trying to remember now is about the lower ball joint that is already attached to the KH setup i bought..if i can use it or do i need to buy the drum brake ball joint and drill the holes out and use them..? I cant remember what the deal on that was. Makes me mad, i had all this in my head a long time ago and was wanting to tackle the job and never did it..now its all fuzzy..