It's not too hard of a job really especially if the bolts holding the straps on aren't too rusted out , otherwise what I'd do is simply cut the straps off and buy a set of universal straps from a parts outlet.
The top part of the tank has the wires and assembly on it that has to be removed and disconnected from the tank then reconnected and be sure to clean the connectors on the wires that go to the tank before reinstalling tank, plus what I do is when removing any hose clamps I replace them with new ones.
Hope that helps and best of luck.By the way those pumps run about 150 bucks plus taxes or more at a lot of places but if you call around you might find one cheaper , try the gas tank specialists or re-builders etc.
