IIRC, if it's a granny low, it's not a muncie, it's a saginaw.
Actually it is a Muncie transmission with the designation sm420. the "Muncie" transmission plant merged with the "new process" transmission plant that dodge owned forming a joint venture between dodge and gm. The new line of transmissions they built are called the "NEW Venture Transmissions". The NV4500 has some of it's pedigree from the early design of the sm420 and sm465.
