He is using a Comet 40/44 Series torque converter which was designed for engines over 8hp. These are tough to find because Comet is now out of business. There is a Chinese knock of company, GTC, expected to release a similar unit in place of the Comet 40/44. Comet originals can still be found but are expensive. There are other units more readily available such as the Comet 30 series, TAV, and TAV2. These are more common, but still expensive and tough to find. GTC makes a copy of the TAV2 that has some good reviews, PM r97 if you would really like.





