I have your 850whp return system running e85 with just a KB 2.2. Happy with the results, but man the instructions were so wrong and there were fittings missing that I had to buy locally. But I do know I was one of the first to receive the new-style fuel hats. The kit even provided two caps for the fuel rails, which of course are not needed for return style. Any chance of getting some credit or something for the money I had to spend to complete the build?
Thanks and I'm glad the system is working well for you. Did you contact us about the missing fittings or confusion on the installation instructions when you were installing it? I'm sure we would have been able to clear it up for you at that point. If you didn't contact us and just went ahead and purchased fittings on your own as well as installed it a different way then how we designed it to be installed there's not much we can do.
The kit using 2 caps on the rails is actually correct. It's a dead head setup which we've been running with great success for years on several of our cars. That's maybe where some of the confusion you had could have easily been cleared up with a phone call. Again I'm not sure if you called or not but if you did it would have been resolved immediately.
The diagram for how the kit needs to be installed is located in our installation section linked below. It's listed as SN95 Dual Return Style Fuel System Diagram.
Installation Documents
It even has part numbers on it which correspond with the checklist you receive with the kit. We provide all of the parts needed to do the install like this. If you try to install the kit any other way than that then yes you'll be short on fittings.
Let me know if you have any other questions.
Thanks, Jared