The turbos Forced Performance has that use the 84mm inlet only work with the FP 84mm inlet. They won't work with other brands. And it might be possible to use an adapter but good luck. It's bad enough fitting the thing in there the way it was designed to be done. Trying to mess with an adapter and cutting an inlet just right etc... Well lets just say you should video the process and send it to America's funniest home videos lol. Just buy the correct inlet for the turbo. It still may need trimmed a little bit, the one I installed did.