Thru hull straight threads to hose barb

[Mg451]

I have gunnels on my boat ( downeaster 32) so my deck must drain through the deck and to a through hull on the outside of the hull. I currently have (2) 1.5" drains. They penatrate the deck then 90 that leads aft for a few inches after to another 90 that goes out the side of the hull. The reason it leads aft would be because it's to tight of a turn to just 90 right overboard. If that makes sense. I have to record my decks and when I take on alot of water it takes to long to drain. So I'll be adding a few more. The factory fittings are bronze oblong custom jobbies. So I found some 90 degree deck drains on Amazon they seem ok

SHENGHUISS 90 Degree 1-1/4" and 1-1/2" Boat Deck Floor Drain Scupper Marine 316 Stainless Steel Deck Floor Drainage Cover with Three Screws https://a.co/d/fZFwQx5

So I had to compromise and get the stainless even though my boats all bronze and I like the classic bronze look. For terminating on the side of the hull I'm gonna use 1 1/2 grocco bronze through hulls. I'm trying to get a bushing to go from straight thread to 90 to hose barb..like this

https://www.google.com/shopping/prod...772724313,cs:1

However this isn't straight thread.
Any ideas?