Good to know. Bummer. I was under the impression that the stock 273 heads should be high compression. I may strip the block completely. I will read up on the pistons and performance differences.
Very cool score! Not sure if you knew but "Power Pak" was an OEM name for the Commando motor. Pistons in that block arent Commando pistons but no big deal. More just an fyi what power Pak meant. Also that could be a Formula S car with a Powe