Kind of irrelevant but not really.
when i did a big block swap in a 59 regent,i used a full size truck as a donor for the swap.
e-brake was now in the rear axle,some universal cables got that working. Moved the perches to fit the car springs.
I cut whatever i needed off old frame to get the mounts.
same for transmission. I built what was needed.
the trick is centering, rear diff is offset, engine needed to be offset in engine bay to match driveline angles. Its not much, but will prevent driveline vibration.
be prepared to remove/install engine several times, i think for me it was 4 times.
at that time i retrofitted power
steering And floor shift for transmission.
all parts were modified to fit the car.
its do-able,welding is a must.
it took me a total of 5 weeks start to finish,and the end result was worth it.
the 218 in my fargo will stay put as long as it keeps breathing, but if a con rod plays peek-a-boo i wouldnt think twice about a 318/904 swap.
was the original plan, but the seized engine did come back to life, and runs suprisingly nice.