I may be wrong, but didn't 73 and 74 e-bodies use slider calipers like the A-bodies?
73 uses the long pins. There are extra brackets that bolt to the spindles. I'm not sure how the A-body is setup. Are they like the late B-bodies...the M and J bodies?
I can still buy all the brake pieces at my local parts store, (and did) and would suggest you give that a try before the restoration vultures pick any more flesh off your bones.
Yes, a lot of restoration companies are just reselling local parts store pieces at an inflated price. Unless you need exact OE correct parts, the local parts store is definately the way to go. Last time I checked, Car Quest and NAPA didn't list the new caliper pins/bolts. Advanced Auto lists them but they are rediculously priced. I found some at RockAuto for $10. I'm not sure how many you get for $10. I assume 2.
Lower ball joint to knuckle bolts, 160 ft/lbs
How in the world am I going to get those at 160 ft/lbs without them being attached to the car? It's not going to happen. I'll probably just have to snug them up and remember to tighten them the rest of the way once the K-member is bolted in. 75lbs sucked last night on the adapter brackets.