I have been wanting torque converters for a couple of my bikes for quite a while. While searching the OldMiniBikes site, I came across a super deal! They have these torque converters at $69.99 now! I just received mine and they are very nice units! It even came with a 35 and 41 gear in the box!
https://www.OldMiniBikes.com/torque-converter-3-4-bore-35-chain.html?category_id=1710
https://www.OldMiniBikes.com/torque-converter-3-4-bore-35-chain.html?category_id=1710