I don't know if this will help anyone,but i think i saw a few posts on where to find the original style stainless louvered bilge vents.
I was able to order these,and found that they matched my original vents on my Tsunami exactly.
They are made by Seafarer marine products and are 12-13/16" long x 4-3/8" wide.The cutout size is 11-7/8" long x 3-1/2"wide.
The part number is SEA071391 They cost around 20-25 bucks each.
They're a nice polished stainless steel,made in Taiwan of course(unfortunately)
