Welcome to the forum. New here myself.
I chose the DFR 3". I have used 2" before in other race rigs and they cut. The DFR are padded and fit well. I installed them and using some spacers was also able to keep the stock belts in place for the little short hops.
They are a little wide at the shoulders using the stock seats but are still safe and comfortable. The lap belt position is a little high on the waist but again comfortable and safe. I had to strap the shoulder harnesses together in the back to keep them from spreading out sliding on the roll bar but again still safe and comfortable.
Im just knit picking All in all, a great set of belts for the price and am pleased as punch.
Edit: DFR Guys are GREAT and willing to share their knowledge.
Did I mention that they also give a discount to forum members?