It really depends on the condition of your pad. For duplicating or patching the vinyl-like surface, the right stuff for the job is made by Permatex and it is called "The Right Stuff"
I patched together a 67 San Jose Pad using a reproduction pad for a new jute backing, "skinned" the original San Jose style "dimpled" black skin from off of the old jute. Repaired the "skin" using fiberglass mesh on the back side with a clear vinyl adhesive bought at O'Reilleys for a bonding agent and finally applied "The Right Stuff" over the seams of the repairs. A few repairs required waiting for the first application of The Right Stuff to cure. It took a great deal of time and patience but it came out pretty good in my opinion and what I began with was more or less a throw-away, rodent urine-soaked piece of trash.
Hope this helps
I just read what I wrote here earlier and saw a couple of flaws. First was an "auto-correct" issue with the word "mesh" had been changed to "mess" and I didn't catch that till now.
More importantly, I see a valuable step hasn't yet been mentioned in this thread and I looked at another thread I had begun about using "The Right Stuff", the step was not clearly outlined there as well.
http://www.concoursmustang.com/forum/index.php?topic=11069.msg66219#msg66219 The step I am talking about is the "skin", once removed from the old jute backing, gets all of the rips and tears repaired using the fiberglass mesh and clear vinyl adhesive , yes...BUT YOU DO NOT USE "THE RIGHT STUFF" UNTIL THE SKIN IS RE-ATTACHED TO THE JUTE BACKING (At least I didn't). I used "The Right Stuff" only as a filler agent, like Bondo is used to fill dents. It wasn't used for connecting the "skin" structurally-speaking.
Also note: Using "The Right Stuff" as a filler to bridge the repairs together was trickey and it had to cure overnight between coats.
I like that idea that was mentioned about using "Spray Platic Dip" coating too, that may be help for a final coat but I wonder if it has too much luster