Maybe I am thick about this but what exactly are you asking?????. Bolts come in different grades and threads. 2, 5, 8, 2 soft,5 medium, 8, hard. Look at the head markings and do a thread count. Then you know what you need. No head markings grade 2, 3 marks grade 5, 6 markings grade 8. If your looking for springs take one of the originals and take it to a shop and have them do either a pull test or compression test and see what range your working with. You can most likely find them around a clutch shop the ones your describing. They can most likely tell you what you need by looking at them. I hope some of us have answered your question but I'd sure like to know lol. LarryT
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