Isn't there somebody somewhere who swears by the 3ze? That's the 4cylinder out of the taco, right? I remember reading that they get about the same mpg that you do now, they make 150 hp though so they are defintely a performance boost. Plus they are OBDII, which would be nice. I'm thinking this is the way I would go. But that's just me... Guess it all depends on funds and what you can find.

For Sale or Trade
33" AT Winston Wheelers. Nearly New.
all stock except for 4.88s...