... I sorta do but i doubt its worth the trouble....
I have a Drum rear knuckle. and you can convert them to disc by unbolting basically everyone and moving it over to the previously drum knuckle. but this is a 'been told' type of idea in my head. I've never done it or seen it done, but i've "been told" it works..
And the knuckle is stuck on some track arms, someone gave me a rear subframe, track arms, and knuckles.. but its all pretty rusted. You're welcome to come over and try to get it unbolted from the subframe and take a look at the possible conversion (we can go crazy unbolting the drum one and see if it looks plauseable "
cost : free
worth it : maybe not ...
up to you ... could be a good chance to go on a quick lil ride in the rally car too, but i live at the end of Nevada .. (cold springs)
buyer has been warned!