WI/Mn transmissions builders?

Look up "727SpecIalist" Keith Long. he only builds mopar trannies. He is resonable also. He is a mopar dealer mech, and is located in NW Indiana, just over the Illinios, Indiana state line. I got my trnny from him a few years ago, no problems.
Where are you in Wis,??.
barracudadave67