Bought a crate engine today

Found this 380 HP magnum on craigslist. Came with trans, convertor, alternator, starter, ignition, and a Holley 770 Avenger carb. All new or rebuilt parts. They are going in to my 65 Valiant that has been sitting as a painted shell for about 3 years. Just kind of excited to get the project going again.

Do these magnum motors still use cast pistons? I know lot of people say bad things about the Mopar crate motors. However I had a 360 HP LA motor that I really liked in a 68 Dart.

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