some more pics.
hotd4 with the org. nvidia 6800 videocard + org installations dvd
r-tuned with the org. nvidia 7800 videocard + copied installation dvd (sega sent me a link for download)
Yes. You will need a Lindbergh JVS I/O for the games but most importantly, R-Tunned wont work without the force feedback board and Com1 RS232 cable.
If you try to start it without thia connected it will come up with a force feedback error and wont start the game.
No way to manually disable it if it is the original disk image running on the actual hardware but Ive heard people have gotten around this issue with the patched roms for multis.