Most of these dealer profit items can be canceled by calling the third party providers directly.
My friend insisted on buying a new car that she couldnt afford. According to the finance guy at the dealer she could only get approved for a 6 or 7 (i forget which) loan if she bought the extended warranty. But he told us we can just buy the warranty to get approved and cancel it once the loan was approved. Not sure how true this was or if he just hoped we wouldnt cancel it. But we had no issues canceling it and getting the credit toward the loan, which was well over $1000.
Check the fine print on your receipts. It is unlikely any warranties you bought are actually from Subaru/dealer.