Removed fuel tank, added a gallon of Evapo-Rust, and let it work for 24 hours, flipping the tank every hour (except while sleeping). Looking at the inside of the tank, I'm comfortable giving it a shot. Now I need a fuel pump and a new O-ring for the fuel pump housing. I see a lot of people have had good luck with Walbro pumps. I'll probably go that route. I see on the Walbro site they don't have an option for 200SX's other than B14's. Am I wrong in assuming the Z31 pump is the same?