I was going to swap a 351 from a old project into a 1998 3.8 Mustang. Just realized the state I am moving to has emissions testing. Is there a way to pass? The 1999 Ford Explorer had odb2 and a 5.0 but not sure if the Mustang firing order will work with that computer. Should I just start looking for a 1994 / 1995 Mustang. Cars older than 1995 are exempt in that state.