I need some help. I have 2 2001 monte ss, the one i drive daily, the tentioner pulley locked up last night and fusion welded it self to the head of the bolt and broke the bolt. i have the plat off and working on drillin out the rest of the bolt. its 200 bucks for the plate assembly. I just need the bolt. Does any one know what size the bolt is and if its right or left hand thread. thanx.