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Another option could be the real GT3071R , unmolested GT30 (60mm 84T) turbine with the same compressor wheel as the 56T 2835 . As we know Garrett is doing T3 flanged GT30 IW turbine housings at last so it will bolt to your manifold and have the integral waste gate . The unmolested GT30 turbine measures 60 x 55mm (84T) rather than the cropped version which measures 56.4 x 51.6 (84T) or 56.4 x 53.6 (90T) . What this means is that you'll get a bit more exhaust through the unmolested turbine than the cropped one , while developing a little more shaft torque . The extra gas flow means less for the waste gate to bleed off to control boost pressure . Also the Garrett housings are available in .82 AR so a tad smaller than HKS's .87 Pro S housing .

The GT3076R or HKS GT3037 56T will easily make the ponies but I'm not sure if it would make good torque where its needed .

Cheers A .

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