i had to edit this post i just found an engine out of a 2004 mach1 with 91,000 mi on it from midway junkyard installed the new timing chains on this engine it runs perfect this engine should last at least another 100,000 mi with good maintence msd coils now i have over $8000 in the car selling for $ 6500 firm engine has 90 day warrenty call steve at 816-289-4613 i live in kansas city m.o. car has 216000mi