There's a guy on Facebook that did a Magnum with a 340 V8. I believe the group is Dodge Magnum Owners. I think the car was painted green. Obviously a smaller engine than a 440, but they could probably tell you what they did to get old school Mopar to work under the hood of a Modern Maggie. I'm a former Magnum R/T owner. They are special cars. Best of luck!