GT30 GT3037 UNIVERSAL application turbo kit with oil hoses fittings T3 Flange November 23, 2023gt30application, fittings, flange, gt30, gt3037, hoses, turbo, universaladmin Very Good response turbo for 6 Cyl applications. This turbo has a flow capacity of about over 500HP. Exhaust Inlet (Turbo Manifold) Flange: Standard T3 Flange. Exhaust Outlet Flange: 4-Bolt Flange. Oil Inlet: M12 1.25 & 2 M8 1.25.