Thanks guys. Good question. They were in a small "auto section", so I hope they are hard enough. They looked like my old ones, except the Knurl didn't hold them . I thought Peening or J b weld might be an option. Glad I found this site again. Not many 6 cyl. Toys out there.
Thank you so much, Linda. It is 1/4 inch shorter than what is on it now, but maybe that's good. Btw. your right about most retail outlet's now. They might as well BE robots.