Swapping a STi 6 speed into my 2004 Forester (5 speed)

Had a couple questions about the swap. I've seen the pallets on Ebay with front/rear axles, trans, shifter, driveshafts, clutch and R180 rear differential. Is there anything else needed? Any issues with the stock slave cylinder from the 5 speed? Does the STi trans bolt right up to the Forester crossmember? Just looking for some insight on those who have done the swap. Thanks!