Next month I'm about to pull the pin on some 2860R -5 but have some question about the marriage between the turbos and my engine. The old bird has done 197,000km and she runs quit well. She is stock and only has an exhaust and PFC as mods. I'm just wondering if these turbos are going to kill the engine or are there supporting mods I can do to make the union work without a catastrophe or is there a safe boost range to work within?