So im only getting like 9 MPG on my yota. Anybody have any ideas why. i just changed the plugs and wires. I think its my gearing to be honest. I have stock gears in with 33x12.5x15 BFG. I wonder if this kit off ebay would fit everything. http://cgi.ebay.com/ebaymotors/4cyl...itemZ160098193916QQrdZ1QQsspagenameZWDVW


Also how hard is it to change the gears out. Im not the best with the tools but not the worst either. If i cant do it how much should it cost to pay somebody to do it, with or without the parts. Thanks guys all help would be grateful. WOODY


Oh my truck is a v6 automatic

94 Yota, ext cab, V6, 4x4, 4in pro comp lift, 3in body, 33" BFG A/T