There are two pumps in the fuel tank. They are saddle tanks, so there is a smaller transfer pump on the drivers side that pumps over to the passenger side. The main fuel pump is on the passenger side. Yes all you have to do is remove the rear bottom seat and access panel to get to the pumps. You need a total secondary fuel system to run straight E85, the DI pump isn't big enough to handle the extra fuel you will need to run E85.