Anyone know who has offered a cowl flap conversion?

[B2C2]

I have a blueprint from the original kit, that was installed many years ago. Company is of course no longer in business. The cable attaches to a bracket that is installed under the right yoke. This one has a steel cable that is the same diameter as the original. My A&P was fine with signing off on this. Twist to lock cables are pretty commonly used on industrial equipment. This cable assembly is very sturdy and my A&P was happy to install and sign off. Actually works much better than the one that was on there, due to being brand new, not 40 years old.

[YankeeClipper]

Interesting.

So does it work something like the emergency brake cable in an old Datsun?

[B2C2]

I don't know how that worked, although we had a datsun at one point. You pull and twist about 1/4 turn to lock it in the pulled position to close the flaps. Push and twist to lock for open.