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My '98 F150 has a 4.6,auto trans, 2-wheel drive, longbed, regular cab and may need an engine soon. It has a bit over 200K on it and is making a bit of noise that doesn't sound too bad but I want to be prepared. The VIN engine digit is a 6. I've found an '02 Marquis engine locally.
Elsewhere, it's been mentioned that there are differences in valve covers, exhaust manifoldsm, pulleys, intakes etc. Is this a practical swap or are there too many differences?