318 automatic, 3 speed, slant six, your perfect choice for a daily driver
I have never gotten better than 17 out of a slant 6 engine and the totally suck on power. I HAVE gotten 20 mpg's out of a 360 in a '79 Dodge Magnum with a 904 and 2.76 gears with 235/60/15's on all 4 corners.
And it has power.
Death to the slant 6 boat anchor!!!!!!!!