Using those specs/ingredients (and a little extra research), here is what I came up with.
Note: I read an article in BYO from the head brewer at Boulevard who said they use unmalted wheat--but he doesn't recommend that homebrewers do that. He said any soft malted wheat would work. He also suggests using the chico strain.

Phooey, I say. That WLP320 is awesome.
Boulevard Wheat cloner
A ProMash Recipe Report
Recipe Specifics
----------------
Batch Size (Gal): 5.5 Wort Size (Gal): 5.5
Total Grain (Lbs): 9.50
Anticipated OG: 1.048 Plato: 11.82
Anticipated SRM: 3.7
Anticipated IBU: 13.9
Brewhouse Efficiency: 70 %
Wort Boil Time: 75 Minutes
Grain/Extract/Sugar
% Amount Name Origin Potential SRM
-----------------------------------------------------------------------------
6.50 lbs. Pale Malt(2-row) America 1.036 2
3.00 lbs. Soft White Wheat Malt America 1.040 3
Hops
Amount Name Form Alpha IBU Boil Time
-----------------------------------------------------------------------------
0.25 oz. Magnum Whole 14.00 11.4 60 min.
0.25 oz. Magnum Whole 14.00 2.3 5 min.
0.25 oz. Simcoe Whole 14.00 2.3 5 min.
Yeast
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White Labs WLP320 American Hefeweizen Ale
For extract brewers, sub in 4.0 lbs. light DME, 1.5 lbs wheat LME/DME, and steep 1 lb. flaked wheat with some DME at 150°ish for about 15-30 mins.