Got a random phone call from Jay today. He stumbled across my build and was wary about our rear crash structure situation with our fuel cell. I sent him some pictures and he talked with Chisek and got back to me within the hour with a direction to add a rear bumper. Long story short, a real shout out to @National Tech for reaching out before we got down to NCM this weekend! Rear bumper has been added and Jay said he'd come up with some ideas to make it better after NCM and asked me to pass along that no one should hesitate to call them with questions, seriously guys I'm incredibly thankful for their help!