New guy from PA... from h2o cooled VW to mopar

While I'm at it... does anyone know how much hp/tq the car would appx. be making with a 340 cam, edelbrock performer RPM heads and intake, and a holley 650?
I'm trying to see if doing the Eddy heads would be worth it. I'd rather not swap the engine out for a 360... but if I swapped, that's what I'd do. Anyone know what the eddy heads add?