Grosko -
I do have aftermarket bulb signal/side lights that are attached to a set of matte black side fairings. I have the original fuel cap as I have an aftermarket cap, but it is keyed for my ignition you would have to put in a new lock cylinder, so I do not know if this helps you. Again you can get a lock and used fuel cap and starter block off eBay with key for a reasonable deal. I do have an OEM 2000 R1 ECU as a spare, and fan motor relay. No ignition coils. I recommend the Old Motorcycle shop, they did have a set of R1 wheels, but I do not know if they have a set of ignition coils. I know that the coils from a '98 to an '01 will work for sure, and even possibly an '02-03 but you would have to do more checking on the 02-03.
If you need a tank in reasonable shape I am selling one, I have lower and side fairings, windscreen, and 2 front and 1 rear wheel, and spare EXUP servo. I had much more, but over the last few months have sold the parts on the R1 forum.