Jim & Mike, While visiting the archives about 2 years ago I noticed that the engineering release for the 35/36 Luggage Rack assembly (48-18575-A) listed only the 700, 730, 740, and 750 models. There were no boxes checked for 710, 720, 760 or 770. That peaked my curiosity so I checked the engineering releases for the brackets only. The 48-18590/91-C brackets showed that they were used only on the 700, 730, 740, and 750 body styles. The 48-18575-B rack assembly and 48-18590/91-B brackets indicated use on the Touring Sedan body styles only.
I went back and checked my Chassis Books and sure enough....page 48 of the Nov 35 Chassis Book and page 131-132 of 28-36 Chassis Book confirm this finding. Since that time, I have found no reference in writing to the Luggage Rack being used on Models 710, 720, 760, and 770.
I changed the reference on page 124 of The 1935-36 Ford Book to reflect this finding before the 3 printing of the book came out and listed this finding in the corrections listing for the 35-36 Book on the Early Ford V-8 Club website.