hello all i have a little problem, when i'm on track and down changing i can sometimes hear the exhaust knock against the chassis leg. i know its the exhaust as i held the exhaust back with a bolt but now have a horrid vibration noise, (metal on metal lol but worked OK on the day) Now i expect its just because the rear exhaust mount has got old and need replacing but i was wondering if there are any poly mounts that are a direct fit? i see Powerflex have a range of universal ones, but was wondering if anyone knows which will fit. cheers in advance Steve