I'd wait on the fan if you could for a while, you will not gain any space that way for a 302.
The Explorer water pump is shorter than the Mustang pump. Don't use any Mustang front dress, including the 94/95(SN95) stuff. I have compared the Mustang WP to the Explorer WP, I wanted to select one of the three SN95 Mustang pumps.
The Mustang pump is longer, while the Explorer pump has more backspacing of it. The WP pulleys do not swap, the farthest forward part is the bolts or center shaft of the WP. The Mustang pulley bolt heads stick out further forward than the Explorer WP shaft. I may try to cut 1/4" off of my stock Explorer WP, depending if it looks possible.
To use an electric fan it is very wise to use a progressive controller, the amperage draw is very low to start. Most fans will pull 30-50 amps or more to start each time. I have a controller on my V6 fan that starts extremely gently, and quietly. I haven't worked out the 302 E-fan yet, hopefully soon. Regards,