I have been noticing a real faint tick and tonight finnaly relized what it is. The top two bolts holding the exhaust housing on came out and its has been leaking exhaust. First question is what size are these bolts. They are the 8mm 12pt bolts that are 1/2-3/4" long. Where can I find a couple, I'd like to get the factory 12 pt bolts. Anybody got a few laying around?? Also, the drain in the valley at the back of the block, where does it go to? I'm thinking that they may have fell down that hole. Is that a bad thing?? Can they hurt anything down there? Or might they be laying on the tranny dust cover?? Thanks for any input! Layne