Juanita Franzi's Profiles in the FMP MoH Winners book depict Luke's #26 as a Bleriot-built machine, and Rick's #1 as Kellner-produced.
In addition, the 1/28 Revell wingtips are really "neither fish nor fowl": They are too rounded to be "Late, Squared" and too square & short to be "Early, Rounded." (See Windsock International 9 Vol 4 SPAD Special)
If you like French Spad XIII's , FFSMC Productions (available on ebay) do 1/28, 1/32, & 1/48 decal sheets for Spa 48's ("Crowing Cockerel") Jacques Roques, and Armand de Turenne. Nice touch is that the sheets include French roundels and rudder stripes for BOTH machines, so you won't have to choose between the two. Downside is that they were both Early, Rounded wingtips, but few casual observers would probably even notice.
Regards, Rob