I used an 8" dual diaphragm from The Right Stuff. I was told they work just as good as a regular sized one but also works good when you are making less vacuum. Also attached a couple pics of my front sub frame rebuild for your viewing pleasure!
I was checking out your pictures of your completed subframe and I noticed the motor mounts. I didn't have those. So I looked them up and ordered them.
I noticed you had left out a few of the bolts for attaching them to the subframe. Does something else attach to those bolts as well and that is why you left them out or did you just not install them yet?
I'm ready to bolt mine on but I don't want to have to take it back apart to install something later on down the line.