12 Rear Strength

Hello, looking for help in knowing if I’m safe with my 12 bolt for my new BBC install. Engine is a Mark Jones 467. 604hp and 598tq on his dyno. Transmission is a 700r4 built for 650hp. Rear is Eaton 3:73 posi with all new parts with original C clip configuration. I don’t know whose axels or spline count because The third member was in the car when I bought it. Tubes are not welded so I will make the assumption it is basically a stock build. I installed a Moser Engineering cover with bearing stabilizer set screws. When I installed that cover everything inside looked pristine. Also have Caltracs on factory springs with 1” sway bar. I assume stock yokes. Not sure how to know. Mostly a street/show car but I would like to make occasional trips to the track. Tires will be 275/60-15 M/T SS radials. Any advice especially with your past experiences would be greatly appreciated Added a few pics