Front Disc Conversion for '65 Valiant

I did the Scarebird conversion on the front of my 65 Valiant. There is a complete write-up at this link;
http://www.forabodiesonly.com/mopar/showthread.php?t=165237&highlight=scarebird

What is it like finding replacement/service parts for this conversion?

That is a big factor.

I'm an old fart & practicality is paramount.