Hi Stu,
Chris from Arrowlane is not a HD dealer. You do not have to get a new fender, but you do have to drill 3 holes on each side of it to mount the fascia to it. I think I had read that someone on this site used Velcro to attach the fascia so he did not have to drill his fender?
A member on here called blue goose gave me the inspiration to do this after I saw he had done this to his bike. You should be able to find his pictures under 2010 FLHTCUSE5 Rip Tide Blue modifications, if you care to look. He did a very good job.
I changed out the rear tail light with the Paul Yaffe stealth 3 license plate frame. Did not have to drill holes for this.
The part numbers you asked for are.
Tour-pack detach kit 53246-09A
6 pcs-3152 screw
2 pcs-59818-09 Stud plate assy
1 pc-60465-09 Fascia, RR fender
2 pcs-60919-09 Stiffening plate
1 pc-69383-09 Envelope assy, LH/smoked lens
1 pc-69407-09 Envelope assy ,RH
1 pc-70338-09 Wire harness
6 pcs-7499 Nut,flange
Please let me know if I can help you any further.
Jerry