dude, if you're a student. I would suggest stick with the stock motor or upgrade to 4AGE. Unless if you have a good sponsor (ie: parents), 3SGE or F20C swap is gonna cost a bomb. Just check out the price of those halfcuts and getting it installed ain't gonna be cheap in any students book.
Plus, maintenance on an turboed 4AGE is not as high as you think it is... unless you have a faulty turbine at the first place.

something different? stick with the 4k that was in the KE70...
http://www.rollaclub.com/faq/index.php?title=Tech:Engine/K_Series/How_to_build_a_tough_K_motor
