I’m looking for some torque converter help please! I have a dark blue torque converter for a GM 700r4 transmission. I was told it was a 3000 stall speed. The numbers on the converter are K3-D91C and 4780-L . There is a 60 stamped on the outer side of the converter towards the outside that goes to the transmission side. I can find nothing that identifies this other than the dark blue color is possibly a B and M converter. Any help would be greatly appreciated. Thank you.