Let me try this way of explaining instead. Yes the 02-03 bracket shown in your picture is same 04+ bikes too.Looking for the seat bracket in this picture which is from an 02. Purchased one off a member and turns out its exactly the same as what I have on my 07 so asking for pics this time.
#16 in the parts picture. Thanks guys!
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The 04+ bikes have an extra bracket partially shown on the parts view already posted here. Its item 20. Remove that bracket from your 07 and tag-and-bag and save screws too. Now the 02-03 seat should fit correctly and latch.
Then carefully identify where to drill the needed two holes for the new bolts and nylock nuts for relocating the loop bracket out on the back fender.
Consider ~1mm thick rubber washers UNDER the fender as cushion (to avoid having to torque the nylock nuts which might create flat spots in the shaped metal fender).
Use chrome (or ?) plastic pop-in screw hole caps to temporarily fill the vacated threaded holes.
This method retains passenger and cargo safety while allowing you to bounce between various seats from all model years.