I had pheonix golds and they were a mahoussive difference over stock
Personally I would stick to alpine, phoenix gold, infinity
Looked for bose ones but they only do it for factory cars like the mazdas

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407BHP and 340lbft
TD GT28/32 hybrid turbo, 3inch decat, 2.75inch exhaust, air intake + large MAF, injectors, fuel pump, tubular manifold