Would you happen to have one for sale?I had a stock car supply place nearby that sold new and used parts. the latemodel guys would replace Heims frequently if the had a couple thousanths play. I was able to buy these joints for $5 a pair. then I used 3/4" thick wall tubing purchased at a steel supplier for $1 a foot. I own rh and lh taps so I could tap my own threads. that's about as easy as it gets.
Maybe you could go to your local race track, buy a pit pass and snoop around the latemodel guys. get friendly with some of them... maybe offer help and heck the just might give you all their old parts (like coil over springs/adjusters, heims, etc)