Several suppliers and builders on here. you use the stock ring gear and pinion shaft. replace the top shaft and counter shaft. mine is several years old but I had to machine the front of the case and both quill assembles are steel.
GMS in south Ohio, Scott Beckett in Central Ohio, Lemkes in Wisconsin, Pro Fab also does them I think. Atlas has three and six speeds. Not sure if maybe Engler does them also?
I have a Beckett trans, is four years old, no problems. You will thank yourself for doing it right the first time. You will spend the same money trying to make a stock trans work for you, been there, done that.
