So im getting a remanufactured engine. I have a question concerning the transmission. DO they have to remove it in order to fit the new engine? (im not a mechanic btw) And if they do will they remove the oil and put some fresh one in there? Cause I dont want the crappy mazda oil in my tranny. I dont want them to flush out my redline oil.

What other parts are swapped during an engine replacement? Does it come with new injectors, valves, coils, plugs and wires? Or they just put the block in and use all your old parts which couldve contributed to the engine failure in the first place?

Thanks all!