Arg! My 5er has started to leak tranny fluid from the front seal in the early spring. I took it out for a drive about 2 months ago and got the "Trans Program" message and it went into limp mode, had it parked ever since. I know I should do a lot of investigation, but I've been seriously thinking about doing the 6 speed manual swap for a long time now, doesn't the 6 speed manual from the e39 bolt right up? All I noticed was an extra sensor in the bell housing, that's about it. I know there's more to it than that, but I'm starting to look for a replacement transmission with 70k or less on it for the swap. Any good advice?