There is a few different sizes motor you can put in a 2000 Ford Ranger. It all depends on what you are wanting to use the truck for.
what is the torque setting for big ends and main bearing on a 2.5tdi ford ranger
it should say on the top of the motor in big print.
Under the hood in the main fuse box. It's the first big possibley silver one closest to the head lights.
In a 2002 Ford Ranger SuperCab ( 73.8 liters / 19.5 U.S. gallons )
For a 1996 Ford Ranger : The ( SuperCab ) holds ( 75.7 litres / 20.0 U.S. gallons )
According to the 1997 Ford Ranger owners manual : ( The SuperCab model has a 20.5 U.S. gallon / 77.6 litre fuel tank )
According to the 2003 Ford Ranger Owner Guide : The ( SuperCab body style ) holds ( 73.8 litres / 19.5 U.S. gallons )
ford 460 big block
According to the 1999 Ford Ranger Owner Guide ( for North America ) The ( SuperCab ) body style holds ( 73.8 litres / 19.5 U.S. gallons )
The SuperCab version is ( 20 U.S. gallons )
The SuperCab is 20.5 gallons , according to the Owner Guide
74.2 liters ( 19.6 U.S. gallons ) if this is a SuperCab