I agree the 88&#039;s are great pullers but you can run the lighter classes with a 77 RC. I have seen 77s in the 3500 pound classes and combines with the HP available they make a formidible tractor up to about 5000 lbs. I am currently pulling a 77 std in the 4000 and 4500 &amp;quot;Super Stock&amp;quot; classes and have never failed to place in the top three. I can usually be competitive in the modified class even though I don&#039;t have cut tires, but I can&#039;t win in the modified classes.