70 340 Swinger Broadcast sheet and other questions

I have two copies of the Broadcast sheet, both of which are in relatively rough shape. Between the two I can get almost everything. In three boxes I cannot read the one or two digit codes.
The first is on Line 1 for the delivery codes (Y section). The car is Canadian built (R, Windsor) and is supposed to be Canadian delivered (Order number is C15538). Would it have a 7 under the "Specs built For" column (Y07)?
The second is what are the two digits that go in each of the columns on Line 4 for the Frame and the Sway Bar (mine has the S31 code)? The frame column looks like it is 76 but I cannot be sure.
Another question is I have the M85 front and rear bumper guards. The rear ones are on the car but the front ones came in a box. I looked at trying to put them on but they just don't seem to physically fit where they should go. Is it possible I have a later (71) front bumper or are the 70 and 71 bumpers pretty much the same?


Here is a B/S of a car like yours built in Windsor..............

Broadcast Sheet-01.jpg