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Thank you both! That was hugely helpful.

The center carb you guys ID’d has the number 7019927 (photo labeled “Center Carb 2” above) and the 2 dumps have the number 7011997 for both. Based on some research here on the forums, those are like 61 carbs? Should work though right? The plan is to put this on my 64 389.

3 others have vents coming out of the thermostat. Does that mean all 3 of those are 59 & older?

Thanks again!