The 2000 Gt has a SOHC 4.6 V8. Stock its got 260 HP and like 290 TQ. 2000 has the old T-45 tranny though. Hope that helped
1996-1998 GTs SOHC 4.6L 2V (non-pi heads) less power due to heads rated at 215 for 96-97 and 225 for 98
1999-2004 GTs SOHC 4.6L 2V (PI heads) more power rated at 260 HP
2005+ GTs SOHC 4.6L 3V newest GT motor rated at 300HP