Man I just called them last week. Good time for a post. I need a hybred converter so I can run the small hub on my 273 motor and the rest of the converter set up to run a later trans with more splines on the input shaft. I asked him 3 times if this was doable and he said no problem. I said I wanted 3000 stall. he said no problem. send us your core and we will build it. 85 bucks. I'd like to hear more feedback........