[FC] Front suspension differences

[Andrew Sego]

I'm starting a new 61 Rampside project. I recently parted out a 64 Rampside 
because the body was just to far gone.  I have the 110 FC engine and both 
suspensions out.  I'd like to rebuilt the suspensions from the 64 and swap them 
into the 61 later on.  I've read that early FC's used station wagon based parts 
and later ones used C10 truck parts.  I have a few questions about my proposed 
swap.

When exactly was the switch?  Is it when they went to floor shift and hole thru 
the tank?  


Is one design better or stronger than the other?  I'd guess the C10 style parts 
are easier and/or cheaper to find.

Do they swap out either way?  (early in late or late into an early) I've noticed 
a notch on the top center of the 64 crossmember for shifter clearance.  Does 
that make it like gas tanks where you can put a late in an early but not the 
other way around?

Thanks in advance

Andrew Sego
Indianapolis IN