I have several: 1. The turbo on a KH engine is what model? 2. The turbo on a 92 S4 is what? What are the upgrade options for the KH? What do they involve? My computer has been modified by IA. Will I need to get that re-done? Will the turbo from the S4 go on the KH? Would I want to do that? Why or why not? What would it involve??? Many questions.... Mike Lawton