Probably performs similar to a stock d5. Years ago I ordered one from them, above the high stall they offered a "street stall" and for a surcharge they offered to "max out" a street stall. So I have a d5 from them that's a 4840DSSMX. Which performs like most other restalled d5s, can get 2800 on the footbrake with effort. It was like $150 with no core (wholesale price). Shop I worked at used their converters exclusively after the famous Dacco "labor problems" in the late 90s.