I've done some research looking for answer for my question. I've found close to what I need. I was talking adding performance to my 07 4.2l with my buddy and he joking around mentioned adding a supercharger. I know I've read fellow f150 ers adding them to 4.2l v6 so I told him Id do it. then he brought up that seriously if I added a supercharger on a 4.2l v6 I would most likely start stretch head bolts and causing massive damage to the engine that's not beefy enough for that kind of upgrade. if anyone knows for real how would the engine would hold up I would greatly appreciate a good yes or no should I do it or not? if not why exactly and if so how much awesomeness did it add? would it really stretch my head bolts? thx. sorry if anyone has asked and answered this question already. I didn't find it in a search

 

My head bolts don't appear to be stretched.. Haha it's only on 7.5lbs of boost. And as far as awesomeness goes, it make my truck cooler than any other F150 I've ever seen. My setup is 100% custom and that's what I love about it.