I just found the sump measurement on Hughes engines web site. They said it's 13.5" wide. Here is the link if anyone is interested.

https://www.hughesengines.com/Index...rch=31580&submit=Go&partid=25912

1973 Cuda 528 all aluminum Hemi, 4 speed, 3.23 Sure-Grip, (JA5) Silver Frost Metallic 1973 Challenger Rallye 340 1985 W150 Power Ram prospector 1986 Camaro IROC-Z 305 tpi