The last model civic si(not the current, but the one that was made from like 01-05)had nifty seats. Do the seats have anything similar? like could I put a seat into the 2 door EX and have it fit up the way the old chair did or would I need all sorts of other stuff?

 

Yes it would work.

 

just bore out the outter rear slider whole .25" downward to get all 4 bolts in.

 

what do you mean by downward?