I had posted how to make a tool that is easy and safe to adjust the torsio bar. I am reposting it...
I made a tool to adjust the trunk torsion rods on my convertible. It works really well, feels locked in place and does not slip off. I have adjusted the rod up and down on the first and second notches, but not up to the third notch. That would be a lot of torque on the rod. It should work on coupes as well since the rod and trunk are setup the same way as a convertible, but I doubt it will work on a fastback.
No need to spend money on one. I used a piece of heavy gauge strap iron and drilled holes and bent it as you see in the pictures below. I think the key to it working so well was to create (drill) a open ended hook like hole on the end to keep the tool from slipping off the Torsion Bar when applying leverage. The second hole is 5/16" in diameter to keep it snug on the end of the rod and no more than 3 1/4" distance from right angle end, otherwise a metal lip where the rod wrap around will prevent the tool from hooking on to the rod.
Anyway I hope it helps....
193 H Code Convertible - Medium Copper Metallic -
June 8, 1973, Built Ford Marketing Sales Vehicle