you are in Calgary too, come check out my sub box. I'm actually selling another I made. just send me a private message as I'm not on this forum as much as I used to be.

https://www.facebook.com/marketplace...6498635336968/

Thanks I might consider something like this.
I thought that oem plastic is not the best for subs vs these enclosures:
https://www.ebay.ca/itm/185475688912...mis&media=COPY

The reason I considered an sub in the trunk is because of all the rave reviews. But maybe it won't work well in E53

fair. I have no experience with that box, but I do love the option of it and most swear they sound great. I have zero concerns with my plastic box but I'm not going to try to talk you into something you dont want :) but never hurts to listen to my set up so that when you buy the wood box, you can see how much different it could sound.
If ever intersted, just private message me. No worries!

I'd be delighted to meet up with xoutpost fellow member!
I'll send you a message in the coming weeks, appreciate the offer :)