We have bolt-on style universal resonator tips that could fit both of your vehicles but you'll need to measure you tailpipes to first determine which you'll need. We have two sizes currently:
# PM-5104 which fits tailpipe diameters of 1-3/4" to 2-1/2"
Once you measure the diameter of the exhaust pipes you have you'll be able to easily pick out the correct one you'd need. view full answer...
The MagnaFlow 4-Inch Stainless Clamp-On Exhaust Tip # MF35212 is a universal fit-type product and will fit your 2007 XK as long as the diameter of the existing exhaust is between 2-3/4-inches and 3-inches. In addition to its primary purpose, which is visual appeal, this 12-inch mirror-finish all-stainless steel tip will deliver a subtle alteration of your XK's exhaust note. It will not have a substantial effect on exhaust sound level or character. view full answer...