I started working on the brake hydraulics. I stripped out all the old front lines and old master cylinder. I got a front line kit for the conversion CPP 6770FLK from Summit.
Seems like a complete kit, I've only just started trying to lay them out. It appears that it comes with a different bracket for the prop valve than the normal style on the side (including new prop valve lines) I found this thread which looks like it may be helpful.
https://67-72chevytrucks.com/vboard/...d.php?t=711288
I need to order a booster/MC and a prop valve next, I was looking at summit brand stuff, seems slightly better than the eBay brands due to customer support and they offer an 8" dual diaphragm. CPP looks like they only sell the stock single 11" style.
Will post some pics/thoughts on the brake line kit as I keep trying to figure it out. Would be much nicer if it came with some directions or diagrams for the routing.