Yes the radiator supports are a weak point, unlike the side rails. I've straightened not too badly bent front frames with a 2mtr length of chain bolted to a handy bolt and wrapped around the head of a 14lb mallet. Because the h/light frames are so light they do buckle up badly. Whenever I go to Boss Wreckers in Brisbane, there's usually at least one Honda that's had that front panel cut off it.
I did fix up a CB Aerodeck (built in the US, imported by HondaAU) that had a bit of bonnet and front bumper damage, couldn't find another bumper anywhere (although it looked like the AUD version it was longer (stuck out more) and had different bump strip mouldings and indicators), so I managed to straighten most of the damage with a hot air gun and repaired the splits with aluminium plate riveted in and fibreglass.
When I had my CA hatch (carburetted)there were quite a few around, always was after a PGM-EFI model, but were either too far away, or was beaten to them. Haven't seen any CA's for quite a few years. Just a thought, your doors are probably the same as the hatchback, watch for rust in the roof above the "B" pillar, quite common on the H/backs.
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