I havent fit it, but 95% sure it'll fit... I had to go out and get a 5/8 bit.... and in doing so... I would guess that its actually a metric size thats used to drill these holes.. because when I put the caliper in the hole, it came out to 5/8 right on the money... but the bit wont fit in the hole... so I dunno.. maybe its a cheap bit.. ?
What I did... was use a few stacked paper cups.. (the semi thick coffee cups), and cut it to where it was just smaller than the center hole there.. then pushed it down until the tapered part of the cup slid the small rotor into place.. then used a 1/4" 10mm socket to put in each hole and started my pilot hole with a bit that was just smaller than the hole in the socket.
Additionally I did go ahead and "Trig-out" the first point so the thing should be pretty damn balanced still....
Then I used something like a 3/8, then 1/2, then 5/8... and it looks like this now..
Here is 5 x 4.25" or better known as 5 x 108mm...
And here you can see the Cobra's 5 x 4.5" or 5 x 114.3mm
I called for fun around to see what places would charge for something like this.. they say anywhere from $40-$80.. ha! I think not... lol Hubcentric FTW! lol