400 into 65 valiant

Having the engine that far to the passenger side may limit room for headers/manifolds on the passenger side. Depending on what you plan on running for exhaust, you may want to check on that before locking everything in.

Is the 3 degrees measured with the car level on stands? How did you determine level? TTI claims the measurement from the center of the crankshaft to the top of the K-member should be 4-3/4". Mine ended up about 5-1/2".
Yes, I expect exhaust clearance to be an issue so I will definitely take that into consideration.

The incline is taken with the car on stands, level as far as I can determine. It’s not easy to find a level surface I’m the car. I’ve used the top of the door side, the bottom of the window opening.

I did think of something, I will try to determine the side to side offset of the trans cross member bolt hole for the trans mount tomorrow.