69 Barracuda 6.4 8hp70 swap questions

I am using a Gerst front end. I bought it for my old 340 setup. So yes. I have bought the Gerst Hemi mounts but they do not work with the headers.

Gotcha. I can't help much then.

I need to know if the transmission should be higher. I would need to cut the bellhousing area of the floor to get it higher. Is that what people are having to do? Also, I do not want to drag my transmission over every bump.

I think the angle of the drivetrain and the location of the motor is going to be what drives the height of the transmission. If it is above the k-frame and any exhaust that would be under the car, I would call it good.

And no, I don't know what angle the drivetrain should be at. I plan to take some measurements of my 360 before I pull it and match that when I build the mount for my T56.