Estimated 0-60 time for a 2003 Porsche 911 c2 with a few mods?

Hi, I have a 2003 porsche 911 c2 with fabspeed max flo mufflers on it, and 18 inch Champion RG5 rims on it. According to online sources, the mufflers add 10hp and 8 lb ft of torque, and the champion rims are 3.1 pounds lighter than stock rims.The rims definitely help the handling on it; I know first hand. Stock this car does a 4.9 0-60, so what do you think the 0-60 time would be after these modifications?