Went to the local PnP on Friday. They had 5 E53's. 4 3.0 M54s and 1 4.4 N62. To my surprise 3/5 had rear window shades (2 complete unpicked) and 4/5 had complete shadow line trim. Anyway, I went there with a purpose. Needed sacrificial lambs for my speaker install. Got all 6 speakers I needed plus a whack ton of harnesses so I can make plug and play the new speakers. Everything you see below for $41. I'll call that a win considering I priced out the plugs and pins and was over that with just those let alone used speakers on Ebay.
And a fun lineup comparison shot of the different door woofers. Not sure what I'll do with the BSW setup as it is stupid rare now and I might keep it should I get another 4.8is as this is designed as a drop in for the DSP equipped E53's. Previous owner sprung for the full front stage tweeters, dash mids, and door woofers. I'm curious if he also did the rear doors. Guess I'll find out when I get there.