Yes, I got the 1/2" or12.7mm one.
Also here is the dyno chart comparing the various dyno runs of my bike.
Top Green line - Original motor, ported heads, Mori airbox, Yosh full system - 134 hp
Next blue line - Freshly built motor, Wiseco pistons, ported heads, Mori airbox, Akro Ti full system - 133 hp
Red line - stock motor, U4 fuel, Mori airbox, Yosh full system - 123 hp
Bottom blue line - stock motor, pump gas, Mori airbox, Yosh full system - 124 hp
If you notice the stock motor with U4 actually made less hp than with pump gas BUT check out the midrange, much better.
We are going to do more after this Friday's practice. I'm not going to be racing this weekend, only practicing.
'07 SV650, '04 FZ1, '02 RC51, '97 XR400, '85 XR4Ti