Well I just picked up my first K5. It's a '76 350/350/205 D44/14bff both locked. I've searched and read recent posts on the subject but there seems to be a lot of conflicting info. I currently am running a 350/350/205 and really want to replace the tranny with a rebuilt 2WD TH400 that I have sitting around. Can I make this work? I am also thinking about doing the doubler with a 203 in the future (or now if it makes more sense) if this makes a difference. What considerations or other requirements should I consider with this buildup? Thanks for any help guys.