This rear end looks like a 41 with the usual shorter radius rods. I removed the torque tube to disconnect driveshaft from banjo but NO coupler. The back end of drive shaft appears to be threaded directly into the large nuts at front of banjo section. Anybody know what it is??? I was previouisly told that the rear end was a 41 six cylinder rear assembly due to being a 3.63 ratio (11-40).