P1000 Conversion

Hi, My name is Daniel and I am interested in converting a P1000 step side van to ev. The van weighs 15000lb and is currently powered by a ford v10. I know that heavy trucks are hard, but I think my case is ideal for conversion. The truck travels no more the 50 miles a day, and is parked indoors in a warehouse at night. I can get any wall charger I need. The truck has a manual transmission which I have seen people connect motors right to the transmission input shaft.

I do not know where to start on this, and help with complete systems or conversion companies or any other places to start digging would be great. Thank you for the help.