88-95s are different than 96-98 trays! FYI you need one from a TBI truck not vortec because the vortecs relocated there washers bottle to just under battery tray and just use a small plastic piece.... it might fit BUT unless you get the whole washer tank as well it will have nothing to sit onto or bolt to
i find em every now and then in my junkyards i go to. ill keep an eye out. they are in gas trucks and diesel trucks as well BUT the diesels of course dont have the evap can bracket. but that can be made with simple scrap metal and reuse your old bracket and space it out from the battery tray afew inches.
also airman.... if ya need a vortec toolbox i have one ill sell for 38shipped. i bought it along time ago when i first got my truck but then i switched my plan and went with dual battery boxes myself so i havent used it just been collecting dust out in the garage shelf for years! has the box and lid as well.