Does anyone have a source for (or suitable substitute) body mount bushings? The 65 Impala convertible looks close. And of course I would need radiator core support bushings as well.
Thanks in advance for the help.

 

Late here, but as far as I know, no one makes a kit. Somewhere around here someone cobbled up a set for a similar mid-late 60’s big Olds from various sources, but my impression was that it was a fair amount of trial & error.

 

Ames Performance lists body mounts individually with dimensions in their Full Size catalog. You'll just have to match yours up.

 

Ames Performance, the Pontiac people have been great to work with for several years.

 

There will be six large round mounts, four near the firewall and two over the rear axle.
These mounts were used on full size models from '63 thru '66, and were also used on the 1966 Toronado.
I found this out by sleuthing through the parts book and comparing numbers. Steele Rubber has them listed for '66 Toronado.
Steele Rubber Products - Body Mounting Pad Set | Steele Rubber Products
As Joe suggested, for the other mounts check your dimensions with the Ames Pontiac chart and you may find the rest of what you need.
I found all the mounts from those two sources for my '63 Dynamic 88. Good luck.