Im turboing mine, i went and bought 01 cobra heads/intake because i planed on staying all motor, also i blew a sparkplug out... if the 96s-98 heads have any flaws its the same as the GTs by only having 4 threads holding the sparkplugs in. The heads themselves flow nicely, the intake does a pretty good job too, will match/be very close to most later model cobras with good port work, 4v+ forced induction you can't go wrong. Gl it'll be a hell of a fun car.