I have a 1998 GS300, I have the used replacement engine, I want the oil pump changed (which I already have), the water pump changed (which I already have)
All cam shaft and crankshaft seals changed ( I have those also), Oil filter and oil changed ( also have those) I have the new timing belt and crankshaft gear and spark plugs.
The car currently has the radiator removed. So basically it is replace all of the above on engine outside car, pull old motor, install other one running. What should my total labor cost be to have this done, as I am supplying all materials?

 

...yep, with 15 to 20 hours labor.

Good luck with your project and welcome.