I dunno guys... listen to Terry... if the '01 3.0L heads fit... well? Why would anyone not use them? This eliminates and "questions" about the plugs and welds. It also drops the compresion! Sounds like the best of both worlds!!!!! The ONLY way i could see useing svt heads on a 3.0L at this time is if you plan to build a N/A car and have a good welding contact... oh... and of course only if you happen to have a set laying around or on your present block.....