69 Dart Drum to Disc Conversion

I'm looking to change my 10in drums small bolt, to disc small bolt,I have the spindles from a doner 69 A Body.
Just wodering what other parts I will need to swap?
I have read that I will need lower ball joints from a disc car.....???
But also, there is mixed opinions on if the upper control arms will need to be replaced with ones from a disc car???
Can anyone shed some light on this issue?
Thanks