Still deciding what I will do with my car. I have one of the heads broken in one of the spark plug threads. Should I do the coyote swap or work on the 4.6 engine and put better pistons, trick flow pi heads, bore the block and try to get to 400hp? What would be cheaper?

 

Pi head and intake swap would be the easiest, cheapest, realistic way to go. A new 5.0 would probably be pretty expensive and require a lot of mechanical skill.

 

What he said. A coyote swap would need the full wiring harness and transmission to go with it. A PI swap would be the best way to go.