Quote Originally Posted by Fatboy501 View Post
Since this was posted... are there any heads that are better for our cars that came stock on other vehicles? Or are they pretty much all the same stockers on series 2, series 3, etc?
No.

Series II and III are different slightly.

Slightly different valves in series III, same poor casting and poorer quality control.

Quote Originally Posted by 99PGPGT View Post
i heard from an auto teacher/tech that ford 3.8 heads flow very nicely, so im wondering if you could do the swap..
No.