I need the measurements of the 4 bolts on the back top of the best-top 2 piece hard top.. I have a 2 piece hard top but its not by best-top.. Its by steel horse and they don't have the 4 bolts already in the top like the best-top 2 piece tops.. i am going to install the roof rack so i can place the front top part onto the top of the back piece.. Can anyone please help me?? IT will be greatly appreciated!!!!!!