ive heard the same, that they made the head bolt holes deeper to help remedy the head gasket issues in the later blocks.. only issue you would have is if the 00 engine was made in the last half of the year and was internally balanced rather than externally like the 95s.. in either case, use the flywheel or flexplate from the respective block
2003 3.8L V6 4R70W
Windstar Upper Intake with cool-air intake, MAC LT headers, BBK O/R H-pipe, and flow 40s, SCT tuner, FRPP Alum. D/S, 3.73 gears, Auburn HP limited slip, and Team Z LCAs, Eibach sway bars.
Best 1/4 time: 15.036 @90.92mph, 2.148 60'