68 cuda 340 engine color: international harvester red

I remember the Hemi orange (street hemi actually) from MP was very thin. It took like a whole can just to do the short block and another to do the heads. That was over bare metal and I bet primer would have helped but was unsure if primer was high heat like the MP stuff. I used the Aurozone Mopar red on my slant and it came out...well...red. But it was ALL red so nothing to match it too.