Impact socket are always thicker than regular socket... so if you get a 30mm deep socket 12 points (right Bill?) It should work. I used the same socket on MB tranny for the output flange... it looks odd because of 12 points... but heck it is 12 points...
Snap on truck would have it... I think $30... I simply used a 3/4" drive with 1/2" adapter and used 1 3/16" socket (only comes in 3/4" drive)