I have factory brochures for the 86 and 89 Mercury Grand Marquis so if you need any info from them I can post it for you.
Not sure you want to add this but, the brochure for the 86 shows that the “Trailer-Towing package” comes with a “3.27:1 rear-axle ratio” and the brochure for the 89 shows that the “Trailer Tow III Option” comes with a “3.55:1 Traction-Lok axle”.
Not sure you want to add this but, the brochure for the 86 shows that the “Trailer-Towing package” comes with a “3.27:1 rear-axle ratio” and the brochure for the 89 shows that the “Trailer Tow III Option” comes with a “3.55:1 Traction-Lok axle”.
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