I have had two different builds and hands down the best was the Mooneyham that had teflon strips. BDS with EFI was my second build and their customer service sucked. Mooneyham is a small customer oriented business and Mr. Gene Mooneyham (now deceased)was great to deal with. I talked to those guys last week and they are still small and VERY helpful. My BDS/EFI setup as it appeared on the cover of Jan. 2000 Car Craft.