Stuart Marine sells the black version.
D&R sells the white version for PEARSON 31 and for PEARSON 33 (look under 'Deck & Hull'.
I bought mine from D&R about ten years ago when the price was probably half what it is now.
I posted photos of my installation in the photos section - just keep going back in time down the list until you find them.
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Eric Lesniak
#3485 "Shoal Mate"