Well, it's cracked. How bad is it?

RustyRatRod said
You should fab a bracket on the tube to hold it in place if it does not have one. I would not use an epoxy there. I think you will have better luck with some RTV. It will not break if the tube moves around a little. JMO. I am sure others will disagree.

I had wondered if that was an option. I do have this bracket from the old engine I will be using at the top. So you say just apply some RTV on the tube up to the bevel and install it?