Magnum head and exh manifold ID

Apparently some people here have never swapped a Magnum engine into an older car before.
They use the same motor mount bossing and bellhousing bolt pattern as any LA engine..
The front accessories, timing cover, PS pump, water pump and alternator brackets from the older blocks will bolt on.
IMO, the serpentine set-up and the high output alternator would be a BLESSING to an older MoPar.
Adapting the power steering pump high pressure line to the older box is a cinch and who wouldn't like the more efficient A/C compressor installed onto an older conversion?
The only real difference is with the 360 Magnum's balance and that's a minor issue, in reality.

I'm currently working with another 360 Magnum conversion to an older vehicle, which will again employ all the nicities that a Magnum has to offer, along with the stock fuel and emmisions management of a computer-controlled engine.

All in all, a late model conversion into an early body is only as hard as you make it. Just diving in never did more than ruin a few parts and cause a few extra $$ to be spent.
Both are replaceable.

Mark.