Suburbans for 1958 were quite similar to those sold in '57, but with detail changes like an under-bumper grille and a V in the grille centre. The P-L-Y-M-O-U-T-H lettering was gone agin, replaced by a hood emblem. The rear vision mirror mounted on the dash top moved off-centre over toward the driver's side. The old L-head six was still available (though not for too much longer) and there were now three "Dual Fury" V8s; 225 bhp, 250 bhp (4bbl) and 290 bhp (8bbl), as well as a 350cid "Golden Commando" option.
Source: Wikipedia, 2013