Sorry I’m not help but I will say aftermarket support sure is nice. I have three of these used to be geared 1.98, 1.80, and a 1.69 but I sold the 1.98 to calm the car down and bought another 1.80. Bellhousing can change from big block Mopar to small block Mopar in about 4 minutes. On my 727’s I’ve had the CSR shield and really liked and blankets but I’m betting the blankets aren’t 1/2 as thick and heavy as they used to be. That Lakewood blanket was a beast.