Hi Simon, wheels suitable for a D2 regularly come up on Fleabay. RR P38 wheels will fit also (1996 to 2002?) I recently got a set of 5 very good condition 16x8" alloys with centre caps off a 2000 RR with 4 excellent (70-90%) Michelin XPCs and 1 worn out XPC for $660. (The owner had fitted very flash, but not at all practical, 20" wheels with low profile tyres, I asked his wife why and she just shrugged!) As someone else mentioned just be patient, if you do go for steel wheels you will need nuts and centre caps as well.

Good luck.