Plan for Part 2:
I am expecting to pick up a moveable shell of a 2003 S. This will become very useful:
- It allows to build the whole V8 conversion into this tub, before swapping it over to my car
- Larger coolant pipes and hoses for the center radiator (if that turns out to be needed)
- ABS 5.7 to replace my ABS 5.3. This interfaces to the 987 rear sensors.
- Wiring loom providing the connectors and wires for these sensors, also the fronts
- It has the correct front ABS sensors.
- Likely the wiring loom has some convenient connections for the new ECU, missing in the 97.
- S brakes in case I want to upgrade.
Engine wise the BGH Phaeton engine is a candidate. Available in low mileage still. Also considering the slightly older versions (S6, S8) which have higher power. The BGH seems to have convenient locations of the pulleys and water channels. It runs a DME 7.1.1 which should interface ok with the 1997 car and ABS 5.7
Gearbox is already sorted, but might couple it to the taller 0A2 instead. Need to make some calculations on this.
Plan to run the 981 PSE exhaust. I have one side with damaged pipe and this seems to fit the 986 like a glove. Cut the pipe and weld a flange on. Then the main concern would be the pipe between engine and exhaust, fitting a cat somewhere in between.