I just read a road test on the 03 Aviator, which uses the same engine as the Maraduer with the exception of it's intake runners which are different from the Marauder's. Ford wanted the engine to make more torque in order to propel the 5000lb. vehicle to 7.6s. Why not use these runners in the Marauder to make it the stump-puller it should be. The Aviator's torque peak is around 3400RPM as opposed to the 4200RPM that I believe the Marauder's is. The horsepower and hp peak RPM was the same and the torque was 300 instead of the Maruder's 318.
Just a thought to ponder with everyone here.
I think the runners and an X-pipe with 4.10s would make most V8 sedan crazies (like me) happy.
GEO