At random… Question 9/10 From our 'It's Your Chance' post.
Q What kind of engines are avaliable to replace a 4AGE – with what kind of horsepower, and at what approximate cost?
A If you have the earlier 16V engine then a later 20V engine would drop straight in. There would only need to be modifications to the exhaust, cooling hoses and ECU wiring.
You could also change to a 3SGE, but this is a little more involved.
A later model 20V 4AGE is approx 165hp and a 3SGE is approx 180hp. The conversion would start at approx $2500.