I've been watching this thread and reluctant to get into the debate, but I wanted to share my own experience. Granted this was over 20 years ago, but I did the Wilwood conversion on a Charger back in the 1990s. Long story short is I was not impressed. It was expensive, and had numerous issues with brake squealing. Wilwood support was there with several types of replacement pads, but it took a friend who worked at Kragens back in the day to match me up with some cheapo bottom of the line Bendix pads that finally solved the issue. Braking was defiantly improved over the drums, but it was a expensive conversion with it's share of headaches.
When I decided to convert my Road Runner to front discs I went with Dr Diff as many FBBO and fellow Mopar guys highly recommended the kit. I am very happy with the braking, so far, and all of the painful headaches this time was due to In Line tube's quality control as I replaced all brake lines during the conversion.
I can't say which product brakes the best as I can't compare the cars (sold the Charger in 1997 which was a big mistake), but for street use only, my opinion is you can't beat the Dr Diff kit for price and fitment. It was pretty much plug and play, I kept my 14 inch magnum wheels, and saved lots of money over the Wilwood kit.
I do appreciate some of the science that has been presented here as I'm an engineer in my day job. Thanks for the debate!
