There's nothing wrong with bellmouths. Divorced claims the theoretical high ground but it's smoke and mirrors. Also, most divorced designs are crap in reality, way worse than a standard bellmouth anyway. In theory if you had a big turbo you would benefit from divorced. In practice, big turbos use external wastegates and dump tubes so they are inherently divorced. So to review a bellmouth should be cheaper, harder for the company to screw up, and more than sufficient for any possible application it will be used in.
2015 STi: Still Stock
04 STi, 04 WRX: SOLD