I'm going to give it a try this weekend. I did take a look and I can see that the shroud on top behind the kidneys has to go. I picked up a radiator hose tool but no dice, I can't get in there enough. I'm also thinking of a one day subscription to
https://www.bmwtechinfo.com/. I also have the HK tweeters to swap out so I may get the service information on the door cards (shouldn't be that hard) so I can do that cleanly too. Tool pic is giant, sorry.