I converted to 71-72 manual disc brakes and 5-lug. I recommend it. I took my time and it came out great. The only conversion parts I ended up using are rear axle shafts and the tube brackets for the front hoses. I ended up using OEM truck rally wheels. I recommend the manual brakes.
I bought bearings at NAPA, where it was recommended in a forum post to get the premium ones and not opt for the economy ones, which they also have.
Most special tools such as rear bearing and seal remover, installer, slide hammer, ball joint press, pickle fork were rented for free with deposit from my local car parts store. A couple of inexpensive special tools I got from Harbor freight, a pitman arm puller and this style ball joint separator, which helped with the separation of tie rods.
My journey with a lot of great guidance from forum members here:
https://67-72chevytrucks.com/vboard/...d.php?t=824884
https://67-72chevytrucks.com/vboard/...d.php?t=841065