Modern 360 question
To clarify:
5.9 Magnums ("modern 360") are externally balanced. The balance is NOT the same as a previous 360. It requires a specific Magnum balance balancer and flexplate.
All the LA front cover and such will bolt to a Magnum engine. LA style transmissions will bolt right up also.
If you use a Magnum flexplate, you need an internal balance converter with no weights.
These motors will turn significantly higher than 5500 with a good cam and proper valve springs. I ordered a custom camshaft from Comp and mine makes power to 6700.
Steve