I can not count how many times I've been asked about will this engine fit, or will this oil pan fit?? most times the first question I ask is what style block do you have ?? large or small base ?? BUT there is one exception to that rule I will cover that later.      I'm writing this post to help clear up that question, first this only applies to 10, 12, 14 and 16 HP Kohlers, they used two style blocks commonly referred to as large or small base blocks.     We will start with the large base or