LOL, I wasn't trying to jump in line, just showing an interest. I also was interested in the correlation of build date to carb date on early Z's. Everything I've read seemed to point to the carbs being produced in batches and with mine being an early car I don't know if the time frames might be different compared to a later 68 or a 69 Z when they started to produce them more regularly. PM heading your way shortly cook_dw