Car & Driver's numbers for both (both 6 speed manuals)

X-Fire RX-8
0-60 6.5 6.5
5-60 6.9 7.5
0-100 16.1 18.0
1/4 mi 14.8 (96) 15.0 (93)
lat G 0.91 0.92
70-0 161 158
top speed 151 ? (somewhere else low-mid 140s)

Once you get past about 80 X-Fire starts to really pull away.