The problem with the NP203 case is it only fits the 727 auto or an NP435 manual. There are no overdrive transmission it fits (not without mucho dinero)

Just realized that the od response was to a hijacker not the op.

That said you certainly can put a Magnum engine in front of the 727/203 combo. Mostly bolt in but make sure you have the right converter and flexplate for proper balance. Electric will be the biggest hassle but still way easier than a hemi.

Last edited by ruderunner; 04/01/18 05:46 PM.
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