They don't make that particular fin in the USA, and Starboard Fins are usually only shipped with
There are several aftermarket fin companies that make fins in about that size that would work quite well.
Yes, you can use a std. Tuttle fins in a Deep Tuttle. You will need some fin bolts that are 20 mm longer
(20 mm= approx. 7/8").
The fin root of a std. Tuttle is the same size and has the same angles as a Deep Tuttle fin root, but the
Std. is simply shorter by about 20 mm.