Originally Posted by Aimperial

Wow! Thanks for the prompt response, T-Mar. Appreciate it. Interesting to know that the bike is at least a decade older than I am Also, honoured to have the ACE badge on the frame - so cool that you knew the guy!

As for your questions, I'm still learning about bikes so I'll try my best to answer them:
Rear dropouts: short, long or vertical? Vertical
Brazed-on gear shift bosses? I think so
Brazed-on bottle cage bosses? If so, how may sets? I think so. Just one set on the downtube.
Brazed-on pump peg? No pump peg.
Brazed-on front derailleur hanger? No, looks like a clamp mount
Recessed or exposed brake mounting nuts? I think recessed for front brake and exposed for back
Rear brake cable housing attached to top tube with clamps or running through brazed-on tunnels? Brazed on tunnels
Gear cables running over or under bottom bracket shell? Over