Most of them, no. My very first car CD player was a Pioneer than you could bridge the front and rear channels to drive just the fronts (or rears... whichever) It sounded maybe 1% better. Bridging an amp almost always causes distortion and a lot of times, the speakers only pulling like 1 or 2 watts off the deck/amp anyway.
Best solution is a small dedicated 30watt or 40watt per channel amp.