I've had similiar problems with my 2000 SVT in the past. The car would sputter slightly, then just die. I'd crank it over or pop the clutch and it would start right back up. Sometimes it would only idle rough for a few seconds. I replaced the coil pack and plug wires and it hasn't haunted me since. That was 2 years ago.
Try doing the easy stuff first. The coil pack and plug wires were easy to test with an ohm meter.
Tim
'00 SVT
