After searching the net and not finding anything that covers Walbros and the square bodies, I thought I would post up a few pics. The reason for this upgrade is the stock pump can supply about 15psi and support engines up to around 275 horsepower, beyond that you'll have to go with something else. My future engine plans should put me in the low 300's so the Walbro 190 can easily provide the necessary fuel. Above 350 hp a Walbro 255 would be a better choice. Dealing with a Suburban here, which means a rear-mounted tank and the typical things that prevent you from easy access. In this case that means a hitch and skid pan. I tried to just remove the hitch first but realized it would be easier to just take the bumper off as well. Then the hitch came off... but not without a fight. There's always that one bolt that's determined to mess up your day. If you don't have one of these in your toolbox, it should be the next thing you buy. The Makita GEO600 turns 25,000 rpm's and buzzed through this grade 8 bolt in twenty seconds. Next was the skid pan, held on by six bolts. Note one of the tank strap bolts to the left. With the pan bolts removed, I lowered the plate with a floor jack, but it's not really that heavy. It was reinstalled later without the jack. Next was the filler neck hose and the overfill return line next to it. I removed the rubber section of return line but the fill section has to come down with the tank. You'll also need to remove the bolt that holds the pressure and return lines to the frame so the tank can be lowered. This is on top of the passenger side frame rail located even with the front edge of the tank and can be accessed through the wheel well.