GIXXER - The crank is a welded up stroker. For a normally aspirated street motor, they will hold up fine. If youre gonna turbo or spray the motor, stick with the stock stroke or step up to a billet. I had mine done last November by Falicon, and I believe it took 4-5 weeks and cost in the $850 range. I know now that APE is also performing this work and Johnnycheese has had them do one for him. Maybe he can share the cost and turnaround time he experienced. Cometic has a good selection of diferrent thickness cylinder spacers available. Muzzy offers a 3mm welded stroker crank for the ZX-11 in his catalog, but Im not sure who is actually doing the crank work.