I'm much better with old iron so forgive my ignorance please. Is there any difference between 3.9L (NAII) and 4.0L (everything else!) ECU's or ather bits that might need changing? and is it possible to rebuild my 3.9 as a 4.0 with the bradband manifold etc. and not have to spend a fortune changing bit?
Thanx in advance guys.
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