I bought the same exact spindles from Suspension Max. They arrived quickly, and are a nice part....especially for the price. I have 15" Torque Thrust wheels and I didn't have to notch ANYTHING for them to clear.
I'm really wanting to pull the 3" spindles back off though....and go with like a 1.5" drop spindle and cut the spring a bit. The truck sits waaay to low for what I feel is safe for my new motor going in soon.