They werent expensive back then,
it was a '74 911S with 3.2 and 964 bodykit and I paid it 12.000€
I just finished high school, moved in with my gf and was on a tight budget.
I used to work on the garage floor with -10°c but those were fun times :D

Get in touch with JimmyT here on the forums for Ti lug nuts. http://forums.pelicanparts.com/porsche-911-technical-forum/751555-would-any-one-know-where-obtain-lug-nuts-like-those-used-singer.html

Jimmy is a fantastic guy who makes all sorts of cool parts for these old cars. He's a man who really knows his craft and goes the extra mile to make top quality items at a reasonable price. You also might find makes something else you may want if you've got something in mind you've been looking for. 915 shifter extension, external thermostat caps (with a raised hex tooling to facilitate easy wrenching), ball joint nut tool, RSR thermostat insert, chokes/venturis for Webers, dual master pedal boxes, 930 floating rotor hats, cam housing end caps,........ All sorts of misc. items.

We've been down this road before (no pun intended) with aluminum lugs and their believed risk of use. Easiest thing to do is use steel lugs and no worries. But the aluminum lugs, with or without the ends machined, are not going to be stripped of their threads and catapult the wheel if you use them on the track. Here's another debate for anybody who wants to collect more opinions and personal experiences.

http://forums.pelicanparts.com/porsche-911-technical-forum/903885-aluminum-vs-steel-lugs.html

Bought them a year ago - they were the world motorsports ones but I got wholesale pricing because I buy from the same place Pelican buys and I have wholesale accounts at a few other places as well.

They never used to retail them at 260 either. I think that is a recent price change. IIRC they were ~$185 or so retail.