motion pro now makes twist kits for the Z, but you have to call them directly to order since the kit is too new. i ordered mine yesterday. they have the vortex style (faster pull ratio)or the cr style (slower pull ratio), if anyone is interested.their number is 650 594 9600

 

how much did you pay for the kit? How long did it take to get?

 

the vortex style is 65 and the cr style is 41. i havent got it yet i just ordered it thursday. she said about five days, so maybe wednesday.