This is not a question that has a quickie answer. The truck is 6 volt, needs to be converted to 12 VDC.....do you know wiring or know someone who does?

Engine and transmission mounts have to be fabricated. Do you have access to a machine shop or know someone who does?

Mucho welding required. Do you weld or know someone who does?

Truck probably has a closed driveline. Has to be converted to open driveshaft. This usually means a rearend swap. Do you do suspension work or know someone who does?

Not trying to be anti-project but this is a job requiring several skills......not a bolt in.

mike