Cool, maybe I can help then. Check out
https://www.fillernecksupply.com/
They have it all. Any angle, and many styles. I ordered mine 2 years ago when I had a different plan, but I was determined not to waste money and use it
. So if I had it to do over, a 45 degree straight down through floor would have made it a little easier. But, then you have to cut through bed support rails so take your pick on those designs.
But cool thing is they have the stock style with vent already attached and you can just pick a really nice cap from any place you want. And if you want recessed with stock style, you can't get their recessed 45 degree panel. Lots of options.
And last, I got all my gates hose and aluminum straight pipes from Amazon.
I look forward to seeing what you end up with!