hey guys just so you know I have two Go-Tech .21 7port turbos that are up for sale. One has a like new piston sleeve and rod that has been broken in and checked and also has the updated coated crank and an rb carb. The other has a like new rod just replaced. Only thing is the one head has a fin that broke off. All I did was switch the head and you can use the other head for both motors or just use the other head. All it does is create a bit more heat but these motors never got about 260. You can buy both for 175. Just pm me if you would like them. Thanks alot