94 Celica ST Engine Swap, I need some advice...Thanks! Options

[iatmarketing]

I own a 1994 Toyota Celica ST Liftback Automatic Transmission.

My engine is dead at this point. One of the valves failed on me.

I am thinking of swapping the engine. The shop I know can install an engine for me for around $300-500.

I am considering a

A JDM 4AGE SILVER TOP 20 VALVE 1990-1996 COROLLA ENGINE

and/or

A JDM 4AGZE Supercharged Engine


Are these conversions difficult? On top of buying the engine and just dropping it in, are there other necessary modifications? I am a college student and this cant cost me much. The shop agreed to do it for $300-500. I can buy the engine, but will I have to modify other things once the engine is dropped in? Does this engine fit in perfectly into a 94 ST?

Also the supercharged engine thats for sale comes with a 5 Speed FWD. Would that be difficult to mount to the automatic transmission i have now? I don't want to convert to manual.

You guys here seem very knowledgable. I would really appreciate a response...

Thanks!