Mitsubishi Repair: intake valves, timing, air intake system, mitsubishi dealership

Question
I was wondering if I could replace my engine for the 4g63 engine. Is it possible, without changing out anything else.-------------------------
Followup To
Question -
I have a 1995 eclipse non turbo. I replaced the valves and put the cylinder head back on. Already two times and my intake valves keep on bending. I was told it might be the timing. When I took off the timing  belt I didn't mark it. How do I put the car back in correct timing. Is there a step by step manual I could get.
Answer -
Roberto,
Typically it is a timing problem when your valves get bent.  The best source of information is from the actual shop manual that you can purchase from any Mitsubishi dealership.  You can also refer to this site for additional information:
http://www.vfaq.com/FAQlocator-engine.html

You can also get additional detailed information from the other owners of non-turbo Eclipses from here:
http://www.2gnt.com/nuke/index.php

You should find the information you need from these sites.
Good luck!

Answer
Roberto,
If you're asking if you could simply replace your non-turbo engine with the turbo model, unfortuntely, there is a LOT of extras you would need to replace as well.  You would need to replace everything from the transmission, fuel system, air intake system, ignition system components, and even the car's computer.  And that's just to name a few items.  I get this question a lot and I highly discourage anyone from attempting it.  It would be cheaper to just buy a turbo model Eclipse if that's what you really want.
Good luck!