as noted (PSIMET) , you're getting into rarified air with tubulars, especially carbon tubulars (are there any other kind these days ?)
specialized, racing stuff... PITA for most...
HED Stinger 3 tubulars are 35mm external, and 27mm on the tire cradle. 'Toroidal', so not 'deep'. I'm sure there are good TT race profile rims/wheels available for your use, in varied profiles, for only a few ounces of gold...
as usual, BF, and this thread, has a high Noise to signal ratio...
There's a lot more to 'aero' than just 'profile'; and if you're aero need is absolute, then EVERYTHING matters.
and if you just love the ride of tubulars and are willing to put up with the complications - they're still great riding gear.
google "Tom Anhalt' (
Blather 'bout Bikes) or Hambini and 'aero' and you'll find plenty of good info, some contention, but overall better opinion and research than you'll find on BF.
Ride On
Yuri