Fan not centered with center of radiator

Nope. They keep the same offset to the right. It is TIGHT on the right side. They had to move the steering box to a frame rail mount (no room for it on the K frame) and run a remote oil filter setup on the small blocks to make room for everything. Then try throwing clutch linkage in there, too...
I just checked my 69' and the clutch is 1.5 inches from the fins and the side offset is 1/2" on the left and 2" on the right. Note: being not an AC car, you don't want a Thermal clutch, but a non thermal one so only to rotate at idle and not by the heat of the motor.