Overdrive Options

My only reservations on the AODE/4r70w is that i dont think they have the best reputation. Plus, is there even an adapter?
Lentech has adapters listed but I do not know if he would sell just the bell housing, and his prices aint cheap. My buddy that owns a trans shop had mentioned to me a while back that he might be able to get me an adapter form him as he has purchased parts from him in the past. There is another shop that has adapter bellhousings listed on there site, I will post it when I go get my old laptop out of the garage later....