I've got a 73-76 A-body spool mount k frame I am using to install a 5.7 Hemi in a 70 Duster, and plan on adding some support like you did. I also have to move the drivers side motor mount back about 3 inches and make a new mount for the motor instead of using the one from TTI. I need to do that to make the AC pump from the LX Hemi fit in the car. Thanks for posting the pics.