Here's the info from my GM box.
GM Group # 0.623
GM 12 Part # 3701531(This a box of 12 #,not an
individual bolt #)
3/8-24 x 2 1/4 inches
I tried to post a pic, but was unsucessful
,so I will email you a pic. Let me know if you want a bolt and send me your address and I'll mail it out.
