Here is where I got my AC mounting brackets and components. http://www.bouchillonperformance.com/
If the hemi is in the stock location you can use the stock heater blower motor.I have Barton valve covers on my motor and they still clear the blower motor.
I would stay away from the Schumacker mounts. They do not set the motor in the stock location.From the several cars that I have looked at with these mounts it appears that the motor sits much closer to the passenger side than stock.This will give you shock tower clearance problems with large valve covers.
I have my motor on a stock K frame in the stock location. TTI headers did not fit on my car with power steering.
Also I could not find anyone that made solid stock style motor mounts for a hemi. I had to have my own made.
Good luck these motors are a tight fit,