By the sounds of this it leads me to believe these "350SS" are aftermarket stickers/emblems
and not factory upgrades or packages. "Your 1988-1998 Chevy Truck's emblems say a lot about you. If you're looking for something other than stock , Eckler's Classic Chevy Trucks offers a selection of door emblems that let you express your personality. Our high quality emblems are available in a variety of styles to complement your truck's exterior. These door emblems are a snap to install. Just pop off your originals and install these great looking replacement emblems using two sided molding tape. Set your Super Sport Truck apart with a pair of custom SS-350 door emblems from Ecklers Trucks. Our custom emblems are available for your 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997 or 1998 Chevy Truck or SUV."
https:// www.ecklerstrucks.com /chevy-truck-door-emblems-ss-350-1988-1998.html
