I'm just scared of 700R4's. Replaced 2 in my 1995 Suburban in 100k miles. Kid next door had a moderate 400 and custom built R4 that grenaded 3 times. To be fair the kid was 19 and the X-wife drove the Suburban (no offense intended to the rest of womankind). But I had heard they had fundamental issues with bad castings resulting in bearing and gear case misalignment and binding. It came down to whether you got lucky or not when finding one. I never could substantiate that either though.

Feel better about them now?

Kitz