skateboardpunk

Okay so my intake manifold is warped apparently amd is leaking pretty bad from around the thermostat housing. I have been searching for days online and calling around parts shops and I cant find an aftermarket intake manifold that isn't plastic composite. Do they make an aluminum intake manifold for a 2007 f150 4.6 v8 I think its the STX. Additionally, I have limited experience with this level of engine repair, is this something I can tackle? And I was also considering replacing the injectors and coils/plugs while I'm in there, but not sure how difficult it would be. Any advice or direction would be really appreciated.