I did use the upper hole. I tried both holes just out of curiosity, zero difference.
I agree with the tire size. 275 15 Hoosiers do fill the hole somewhat. Somehow, I have more clearance than the SS springs! This turd still looks like a jacked up 70s rear end and I am not liking it. I am going to sleep on it, but I am leaning towards plain old regular stock springs from Eaton
