Hi, I have this cheap czech bass
this bass is 4/4 ,I put spricore solo strings on it. I dont have a problem with scale lenght but I looked here
Here, neck is 3/4 inch(1.8 cm) deep , but mine is 3 cm

Is this problem fixable?
I have some ideas like making an upright using this bass' neck and bridge.
By the way sorry about my english
