Mince rosemary, garlic and parsley. Dice salami, prosciutto and cheese. Mix ingredients in a bowl with capers and 1⁄3 cup olive oil.
Cut 2 lengthwise slits along the side of the pork. Fill each opening with stuffing mixture. Tie meat with string to encase the stuffing.
Rub pork with a little olive oil. Season to taste with salt and pepper. Place pork in a roasting pan and roast for 20 minutes. Lower oven temperature to 350°F and roast for 11⁄4 hours, or until meat thermometer reads 145°F.
Remove pork from the oven and let rest for 15 minutes before slicing.