crankshaft

I have a drip off the bottom of the gear box leaving a small puddle each day of tranny fluid. I've cleaned it all off and tried to track the leak to be 100% it is the crank shaft seal after reading up on so many people replacing theirs! Although the leak appears to be from higher and tracing...

i really need a glanza engine or crankshaft assembly asap .. but dunno where to get one and how much .. anyone on here selling one ?? please help ?!!!