I just answered your question, but it's not a great answer. I don't know which bolts go with that bumper, and recommended you send your request to support team: firstname.lastname@example.org
General rule, if anyone else reads this:
You can send email to CSBestop@bestop.com
for just about any Bestop related request. And they are WAY better than me at helping with installs, identifying parts, and the general install type things, like which part fits which Jeep. You MUST contact them instead of me, if you need replacement parts, warranty help, etc. I can't use the system they use.
I would forward your PM's from here to them, but of course you can't do that.
You can reach me
anytime at email@example.com
I'll take anything you throw at me, but I'm in marketing. So my real goal is to get you to buy more Bestop stuff, and to make sure you know about the new stuff. I'm not so good at helping you once you buy it. I'm not opposed to helping you, I'm just not as good at it.