Welcome to Allpar.
The bolt pattern of the block and transmission did not change from LA to Magnum. The one thing that may be different is that even though both were externally balanced, I believe the balancing is different between the LA 360 in the 1979 and the Magnum 360 (5.9) of your donor truck. Hopefully someone else can confirm or deny that.
The bolt pattern of the block and transmission did not change from LA to Magnum. The one thing that may be different is that even though both were externally balanced, I believe the balancing is different between the LA 360 in the 1979 and the Magnum 360 (5.9) of your donor truck. Hopefully someone else can confirm or deny that.