Ported LIM won't net you any gains...if anything just have yours cleaned up and hot tanked at a machine shop if you're worried about it.
Ceramic coated X-Over is a waste of money...the throttle body is still gonna get uber hot.
PLOG is a good choice, but the downpipe is the main concern with the U-Bend.
I suggest doing just the 3" catted downpipe or catless, based on emissions...that's where you'll see most of your gains if you don't want to buy headers off EBay (Speed Daddys).
More so...just click the link in my signature and learn, learn, learn.
