Tranny shield or blanket Duster 440

The blanket I think aids in absorbing the energy better than the CSR…. Just my thought. I run the CSR as it covers both rule requirements. When I ran my 727 I cut the floor out and run a two piece aluminum removable cover. Well within the rules, but feel I compromised some safety by losing the stock floor pan…… but oh boy it sure makes tranny work easy!!