Sir what size are tires for this model

If it's a Mazda, now would be the time to replace the timing belt, tensioner and idler in addition to the water pump.

Engine family is the same as that used in Mazda B2000 and B2200 trucks. Quite a bit of interchange.

That being said, even though the water pump from a B2000 might bolt on, the impeller could very well be different and not give the flow characteristics you need for a low RPM forktruck engine. Make sure you confirm they are the same.

MAZDA ENGINE would be the FE or F2 engine

Is Going to be either a MAZDA M4-20 engine or a GM 3.0L if distributor is on left side while,sitting,on truck is the GM if is on the right is the MAZDA.....