I would think all of the EFI Stuff from a 5.0L would bolt on the 289W Engine.
Only problem but not a big one would be to get a cam that would work on the 289EFI vs the 5.0L EFI.
Cam Lobe separation is different in a Carb’d engine vs EFI, firing order is different, also Roller Cam Block, you would need the 5.0 distributor but it should work out great.
Might be easier in the long run an a better 289 would be to take a 5.0L Block and put a 289 Crank/rods and Pistons in it. Was thinking of this myself but stopped thinking when my 5.0L became available.
Great idea, good luck,
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