I used the 3M product on my 85. Was an easy project. The 3M adhesive is available at most office supply stores (business expense
). You do want the heavier duty version. Follow the 3M label instructions, is basically contact cement in an aerosol can.
Roll the pad up and touch it down where you want it and then unroll it. Use a paint roller (3" variety) to help push it down and make contact with the adhesive.
Leave sheet covering the motor and quarter panels while you spray.