Radiators: Stock Mounting Location(s)

[TimC63]

I'm swapping out the radiator in my '63 for the simple fact that I believe it's the incorrect one for my truck (top hose on passenger side), it has a small leak, and I'm rattle-canning my engine bay.

I believe the stock mounting set-up used two bottom retainers with rubber pads along with a single top bracket retainer (as in Chief Rocka's pic & someone’s cool truck).

I guess my real question is: Was this the only set-up or was there another configuration using the six mounting holes on the radiator support as shown in the LMC pic (if not, what were these six holes for)? Does anyone sell the top bracket?

I'd like to figure out what the stock set-up(s) were before I start looking at some of the custom aluminum radiator posts. I know they have direct-fit aluminums from several manufactures...but...$$$.