If you want a reliable stock engine you jus' have to get a thicker metal headgasket in there, this will take alot of stress of the con rods, pistons, bearings and fasteners and will take healthy boost pressure too, but good tuning will be required for sure. I'm for response and on the EP82 when i was on hybrid ct9 @ 18 odd psi, it was quicker then a ep91 running 15 psi on a TD04 in all respects.