The ‘09 I swapped out had the 12 mm hex inside. Went to NAPA and got a set of 1/2” drive impact Allen wrenches and a breaker bar and it came right out.

64 Dodge Coronet 440. In progress
1998. Dodge Avenger. 8.35@165. 4400 DA
250” Neil and Parks Slip Joint. 7.36@183.
4600 DA
242" Mullis Dragster. 6.90@ 200mph