904 Trans safety question

I've read that post and it's quite interesting. However it is pointed at the 727 trans. In my younger days I raced a 70 440 cuda that had a 727. I never had any issues but had a friend that had one explode. Luckily he didn't loose any limbs, but it tore the console apart. But has this ever happened with a 904. Should I just be safe and purchase a shield or am I worrying to much. Anyone have pics of one installed?

Thanks
Rod