Trans shield

I will only use the shield. I have been running the same one for 15 years and just got it recertified for another 5 years. One thing you have to remember the shield cert is good for 5 years. The cert on the blanket is 2 years and has to be replaced. My CSR shield fits just fine in my small block/ 727 combo in a stock floor pan 68' Dart. Now I have seen stock 318 blow up a 727 trans on the starting line when the u joint broke and the trans was in first gear. The drum came through the case. I will not build a trans without a billet drum if you are going to drag race it.