Hi Guys, looking for some input on dished pistons. I am starting a restoration on my 1966 GTO Hartop. It has original 389 Tripower which I believe has 10.75 :1 compression ratio. I have read many posts on how to lower the compression so that I can run the rebuilt motor on 91 or 93 octane. Unfortunately I am unable to find someone who sells BRC dished pistons which I am told will do the job of lowering compression. Can someone point me in the right direction or is there a better solution. The posts i was reading were older from around 2013. It seems that Pontiac dude in Florida is not operating anymore?