I tried searching on it to learn some stuff but didn't get much out of it. In the end I just ordered the 2.0". What are some reasons that it isn't worth it to get that? I really wasn't sure. I wanted to install them as soon as I got them and I thought it would be pointless to pay for a downsize coupler when I could get it that way anyway for $100 less. Did I make a huge mistake or is it no biggie?