I currently have a d15b, and i have the D16z6 head. I was told that the d15b cam is stronger than the z6. I have all the external bolt ons like headers intake manifol,etc. i want to start on the internals and i want to go turbo, what products do you recomend. i was thinking skunk2 valve train and the D15cam modified, will that work or should i just get an aftermarket cam?