If ya want to do it once an be Fine knowin ya wont ever have to do it again ..I would go with Poly.
Some Newer advances do last longer than the Old stuff.
Rubber-vrs-Poly ...over time the Poly will always win out.
Just my 2 pennies
Tim


1952 Chevy Shortbed

Photos in Photobucket

If It Aint Broke Fix It Till It Is!