Wow I suck at this tonight.
I have one of Brian's, even though I use my G25 instead of my GT3RS. It's the same deal as a G25 one just with some holes in different places.
I use a Momo Mod101 which does not come with any holes in it at all. Typically you would drill it at 50mm to adapt to a "Formula" quick release, but I just drilled it at 70mm.
I don't know if I'm answering all you want answered but I'm sure I could no problem if you had any more... =)