Transmission Safety What Fits

Hello folks I haven't been around in a while because of life happening but this weekend I had a birds eye view of a friend grenading his 727 in his 65 CoronetI was next in the staging lanes and thank his lucky stars he had a blanket on his trans. He ended up with a broken foot in two places. Very lucky.So my question is I have a 440 727 in my 67 Cuda and was wondering is there anything other than a blanket that fits. I would prefer not to use a blanket as everyone knows they hold the heat. Oh I have a stock floor as well.