spartan if your having problems getting the bolts off as frogman said spray it with wd-40 and tap it alot but lightly with a hammer it frees the rust off the threads
Thanks for the advice guys, i managed to get it off in end. I had another 12mm socket which for some reason gripped it better. Anyway the pipe has now been cleaned and sprayed. A few pics to follow, pretty happy with the result.
hey Patman sorry to have hijacked your thread man, thinking i should have started a new one now