Steve;
pic #1
Where you have it setting in your pic;
You will have a (very) long rod from pedal to booster.
Pic #3 I see that the frame is "box" at that point. There is not enought room it that point.
Pic #1 What is the chance that you have room between the exhaust pipe n frame at the spot where you "OLD" trans mounted?
Looking at the #3 pic,you are setting (very) close to the frame with your body.
Have you mounted your fenders n radiator suport together on the cab?
You need to ck the fit of the hood to the cab n fenders before you set or weld it solid.
CK out my post(Frankenstine) where I had to raise the front of the cab up 1.5 ' to make the hood fit to the cab.
I just want to make sure that you have the right clearness to make everything fit like it should.
It looks like you have the cab forward as far as possible which is good.
T-P Auto
Tim