After looking up a bit more, everything's interchangeable, but I'm still not sure on clutch/flywheel if manual... It wouldn't be hard to swap it over! Just be sure the new motor has a pilot bearing in the block, if it came out of an automatic and you're putting it into a manual car --
flex plate/auto are the same... everything else should be a direct swap
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2003 Regal GS - the beater/daily driver - somewhat stock (yeah right). No its not a mustang, at least it's blown.
2001 GT Black on Black 5 speed
MM Strut Tower Brace/Weld-In Subframe Connectors/Koni Springs&Adjustables/Cobra Brakes/Cobra Rack/Tri-Ax/3.73s/SCT Tuner 56k miles