Can understand you're wanting more power in a 3500lb car than the 2.3 has but don't think anyone has a kit to fit that motor.
Suggest you put a 2.6/6cyl in the car and find a kit for it as companies as Mosellman etc make kits for the 3.0 and the 2.6 is the same configuration. If you tell them the application they can advise you and help with a kit. As they say, nothing beats cubic inches (millimeters) but the price of gas is the downside of power so you have to find the balance you're satisfied with.
C280Sport, 300CE, 400E, 190/5.6