I went with the 91-95 stock fuel pump/sender unit. It keeps the installation clean and simple. I went to a salvage yard and asked if they could put out a call on their parts locator network.
After I received my packages, I took note of one of the suppliers labels. The fuel pump/sender unit assy. came from Brock Supply
Here is a pic that I took for the sending unit comparisons. You can see one of the shipping box labels/tape with the info. You might try here.
Of course it requires the use of the 20 gallon Poly tank, (if you don't have one already) but this is a great upgrade while you're under there. It is a good idea to replace the fuel lines with high pressure fuel injection hose, it is available at any reputable parts store.