my vitos are three years old still learning about the big bore stuff im thinking about going to wickid and having them turn them into 671 black hawks cheaper than going to vitos for another set for a 1000$ . i have bb carbs and carbs and i run pump gas i just need a set of cases and a 7mm crank . im stuck with a piped engine now with a extra set of stock and nikal jugs on the shelf .