the turnbuckle itself, without the hook screws is like no more than 3" or so....the span is like 5"or6"...you basically put a nut and bolt through the hole thats already drilled into the motor mount, and then it angles down to hook around the carb bar piece. Im sure if you just glance at the distance you'll know what youre looking for instantly. I got the one with a hook on one end, and and eye hole on the other..so i can just hook it under the carb and then use the eyelet for the bolt into the motor mount. Im pretty sure i used a 1/4" bolt and nut.

Its pretty fresh in my head cause I just added it last night...ahha....

I actually ran my turnbuckle behind the motormount if youre looking at the right side of the bike...(between the mount and the frame)...that way it sorta stays out of sight cause part of the frame hides it on the left side of the bike.