Iirc, I've had good luck with a 3" extension and leaning over the motor from the top to get the 2 on the block. The 2 bolts in the diff cover should be pretty easy from the wheel well. You also may need to pull the oil pressure sensor.
nice picture of the bracket. thanks for all the help. I know how I'm going to put this thing back together. I'm going to put a re ring kit in the used motor I bought, then put the short block in the car and build the rest of the motor in the car. Should have plenty of access to the hidden bolt and bracket on the install over top of the short block.