Just installed my Mishimoto High Performance radiator last week and it's awesome!
The install was definitely easy (despite the huge mess I made when I drained the stock radiator).
The Mishimoto slipped right into place, the fans attached quickly and easily with no fitment issues at all!
I also installed the Mishimoto radiator hoses with the radiator.
Overall I've noticed a slight dip in the temperature gauge (no actual numbers as of yet), but any way
to lower the running temperature of the car definitely has its performance benefits.
I would definitely suggest this radiator to all other subaru owners, the price is low and the rewards are high.
to Mishimoto!