Secret Weapon Intake - on a 3S-GE, Anyone fitted this? Options

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SW Intake 1990-99 Toyota Celica

Hi, Just wondering if anyone has fitted this to a 3S-GE? If so, how'd it go? Do you like it? I especially want to know if the pipe is adapted to fit. For the 3S-GE did you use a narrowing adapter or a widening one?

This all comes about because the 7A-FE has a 2.5" intake pipe, and the 3S-GE has a 2.75" pipe.

I've also got it on good authority that going from 3" to 2.75" gives some performance enhancements due to positive pressure in the intake manifold.

Thanks guys.