A good lock up convertor for a 4l80e is $900 or so, so even in the GM world it aint cheap. CircleD is 850-900 for a single disk and 1100 for a multi disk. While I am sure you can find one for less is it really gonna be worth it? I tried to save a few bucks when I had the trans built in my truck, did not take me long to end up having to pony up the money for a good convertor. I know a lot of folks have issues cutting there cars up, but for those of us that started with slant 6 3 on the tree cars who cares? From a dollar stand point what is it worth all original? And how much would it take to restore a car to get it to that point? I am wondering, size wise, how does the Ford AODE/4r70w compare to the gm200? There is a guy up in Canada, Lentech, that builds some pretty wicked aode/4r70w hybrids that can withstand a bucket load of power. Hoping when I go to AZ next week that my trans buddy has anaode and a 200 there so I can see.......